Dota 2 - Windrunner Build Guide

BIO
The western forests guard their secrets well. One of these is Lyralei, master archer of the wood, and favored godchild of the wind. Known now as Windrunner, Lyralei's family was killed in a storm on the night of her birth--their house blown down by the gale, contents scattered to the winds. Only the newborn survived among the debris field of death and destruction. In the quiet after the storm, the wind itself took notice of the lucky infant crying in the grass. The wind pitied the child and so lifted her into the sky and deposited her on a doorstep in a neighboring village. In the years that followed, the wind returned occasionally to the child's life, watching from a distance while she honed her skills. Now, after many years of training, Windrunner fires her arrows true to their targets. She moves with blinding speed, as if hastened by a wind ever at her back. With a flurry of arrows, she slaughters her enemies, having become, nearly, a force of nature herself.

INTRODUCTION
Alleria the Windrunner is one of the best Int hero on the game. She is so useful, in all stages of the game.
Strong on early game, very good ganker on mid game, and still strong on the late game on supporting her team. Shackle is her main skill for the teamfight because she can disables 2 enemies in a teamfight which is very annoying to the enemy team. With the long range attack, she can dominate the early game easily. And on the late game, still useful by using hex and shacle. And with a relatively good damage and attack speed, can easily harass enemy in a though teamfight.

PROS	CONS
Long range, easy harassment for enemy	Shackle requires tree or unit to successfully disable the target
Shackle is one of the longest disable in Dota, and can disable 2 target.	Needs lot of mana to use her ultimate.
Have a physical damage resistance from one of her skill. The skill is also useful to run away or chase	Powershot is not a targetted spell, so it can miss.
Have Powershot that deals high damage in a long area.

ROLE

Ranged - Disabler - Nuker - Support - Escape

STATS

LEVEL	1	15	25
HIT POINTS	435	1,100	1,955	SIGHT RANGE	1800 / 800
MANA	286	759	1,357	ATTACK RANGE	600
DAMAGE	44-56	80-92	126-138	MISSILE SPEED	1250
ARMOR	1	4	9

ABILITIES
1. Shackleshot

Shackles the target to an enemy unit or tree in a line directly behind it. If no unit or tree is present, the stun duration is reduced to 0.75.

MANA COST: 90/100/110/120	COOLDOWN: 12
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DAMAGE: 0 / 0 / 0 / 0	SHACKLE DURATION: 1.5 / 2.25 / 3 / 3.75

Windrunner's variety of bow skills includes an arrow with thick ropes attached to encumber any escaping target.
This is one of the longest disable in DotA. A 3.75 seconds disable will makes your opponent can't do anything while being harassed by your team. You need a tree or a unit behind the first target to be able to shackle properly. So, aim a target that has a tree or a unit behind him. Or move yourself into the straight line of you, your target, and a tree/unit.
If you successfully disabling 2 out of 5 heroes in a teamfight, the enemy's power become so weak and your team can easily harass your opponents and win the teamfight. Keep in mind that this is your target. Your target is to disable 2 out of 5 enemies to ensure the victory of your team,

2. Powershot

Windrunner charges her bow for up to 1 second for a single powerful shot. The arrow deals damage to enemy units and destroys trees in its path. Damage is greatest on first target, and reduces by 10% for each target it pierces thereafter. If the channeling is cancelled early, the shot will still occur but deal less damage.

MANA COST: 90/100/110/120	COOLDOWN: 9
ABILITY: CHANNELED, POINT TARGET	DAMAGE: MAGICAL
DAMAGE: 120 / 200 / 280 / 360	RANGE: 1825

During her early years of training, Lyralei learned to fire powerful arrows that cleaved even trees to reach their targets.
This is your main nuke. You need this to harass, kill enemies and to farm the creeps. A 360 damage ultra long range AoE damage is a very good thing from this skill.
You can kill a waves of creeps easily with this skill. This will faster your earning to makes you get some gold to buy at least a Sheepstick.
And this skill also makes you possible to harass enemy from far far away and keep their Hp reduced. Constant harassment is needed for early game to make enemy can't farm properly and your team can get more gold than the enemy.
This skill is also a very good killing skill. With a high damage, you can kill enemy heroes from many range. Aim your target and shot! Bingo!! you got the streak .
Can also kill enemy in the fog. It will become epic. So maybe you can send your video to WoDota or something.

3. Windrun

Increases movement speed and adds evasion from all physical attacks, while slowing movement of nearby enemies.

MANA COST: 100/100/100/100	COOLDOWN: 15
ABILITY: NO TARGET	MOVE SPEED BONUS: 50% / 50% / 50% / 50%
ENEMY SLOW: 8% / 16% / 24% / 30%	DURATION: 2.75 / 3.5 / 4.25 / 5

True to her namesake, Lyralei enchants gusts of winds to flight incoming attacks.
Got increased movement speed and also be immune of physical attack.
So useful to fight 1 on 1 vs physical attack.
Or to run away from enemy that tries to kill you.
Or to chase enemy that tries to run from you / your team.
Or to faster your movement through the map.
Cast this on a though teamfight to be able to survive from physical attack. Recommended to cast this after all magic is come out and enemy' carry start to attacking you, so you can block their physical attack.

4. Focus Fire

Windrunner channels the wind, gaining maximum attack speed on the enemy unit or structure, although with reduced damage, including damage from Unique Attack Modifiers and item effects. Once Windrunner switches targets, the speed is lost. Lasts 20 seconds. Upgradable with Aghanim's Scepter.

MANA COST: 200/300/400	COOLDOWN: 60
ABILITY: UNIT TARGET	AFFECTS: ENEMIES
DAMAGE REDUCTION: 50% / 40% / 30%	SCEPTER COOLDOWN: 15 / 15 / 15

Lyralei's ability to bombard opponents with a flurry of arrows is unparalleled - even at the expense of accuracy.
A skill to increase the attack speed into maximum attack speed for a single target. Unfortunately, with a reduced damage.
A good skill to focus fire on a target and tries to kill him in a teamfight.

SKILLBUILD

Level 1: Powershot / Windrun / Shackleshot

This is a strategy to get a firstblood
Powershoot if you need a damage,
Shackleshot if you need to disable the enemy, and then your team can easily harass the target
or Windrun if you don't need to get firstblood but need a protection from a firstblood attempt.

Level 2: Windrun
Level 3: Powershot
Level 4: Shackleshot
Level 5: Powershot
Level 6: Shackleshot
Level 7: Powershot
Level 8: Shackleshot
Level 9 : Shacklesot
Level 10: Focus Fire
Level 11: Focus Fire
Level 12: Windrun
Level 13: Windrun
Level 14: Windrun
Level 15: Stats
Level 16: Focus Fire
Level 17-25: Stats

Why maxed Powershot first?  This is your main nuke, you will need this for ganking, farming, and killing on the early-mid game.

Why maxed Shackleshot before Windrun? Shackleshot is the main skill to disable the enemy team. This skill is very useful because your team needs the disable to kill/gank the enemy.
And also, a level 1 Windrun is enough for early game.

STRATEGY
Early Game
On early game, you have the ability to harass the enemy hero in your line. So keep harassing your enemy using a normal attack and sometimes you can also use the Powershot.
Windrunner is also a hero that have a very nice attack animation, so last hits will be easier for you, your arrow will quickly hits the low Hp creep as you wish.
As a defense, Windrunner can use the Windrun to run away from enemy's gank, or if Windrunner wants to keep fighting, it is a good thing too, because the Windrun skill gives a physical damage block.
And if your team wants to try to kill the enemy, you can use Shackleshot to help disabling the target, and then Powershot will deal the damage to successfully kill your enemy.

Mid Game
Mid game is usually the time for ganking all around the map. And your part here is to participate in the gank party  together with your friends.
The main skill for you is Shackleshot. This skill will ensure a long disable for your team so you and friends can easily harass and get many kills. The most important thing to remember is to place yourself, your target, and a tree/unit in a straight line so your shackle can last long and disable properly into the enemy. And if you are not in the position of a straight line, you should move yourself to the right or to the left and then you should Shackling the target. Hope you can do it correctly so your team can attack the target conveniently.
After you succeeded in Shackling the target, you can then use the Powershot, normal attack, or Focus Fire to beat your enemy. And if you are fighting with a physical attack, you can use Windrun to evade the attack. If you lose the fight, Windrun can also saves you and make you escape safely.

If there is enemys wave coming to your base, always use the Powershot to kill the creeps and harassing the heroes. It will reduce the waves power.

Late Game

On the late game, you should still become the big part for your team. Keep in mind that Shackle is one of the main disable for your team. On the late game, with all the heroes become strong, 2 shackled enemy is a big matter for the enemy team and this is your job to shackle them.

Usually, Windrunner player also buy a Sheepstick, this will add one more disable in your pocket. So you can disable a maximum of 3 heroes in a teamfight.

Although it is almost impossible to disable 3 heroes in a moment, you should try your best, aim the Shacke carefully and also don't forget your Sheepstick to Hex a hero.

Your Focus Fire also reach its maximum potential here, so aim a target and keep harassing and killing him.

ITEM BUILD

1. Ring of Basillus
Total Cost: 500
Recipe: Ring of Protection + Sage's Mask

Passive: Basilius Aura - Grants mana regeneration and armor in a 900 AoE. Active: Toggle whether the aura affects other non-hero units. Multiple instances of Basilius Aura do not stack.  + 6 Damage     AURA MANA REGEN: 0.65 + 1 Armor        AURA BONUS ARMOR: 2

Why Ring of Basillus? Gives you attack damage, mana regeneration, and bonus armor. Attack damage to last hits and harassing, mana regeneration to always fulfil your mana to use Powershot, Shackle, or Windrun, amd bonus armor to help you reduce the damage you receive.

2. Phase Boots
Total Cost: 1350
Recipe: Boots of Speed + 2 x Blades of Attack

Active: Phase - Gives increased movement speed and lets you move through units. Phase is cancelled upon using another item or ability. Flat movement speed bonuses from multiple pairs of boots do not stack. PHASE DURATION: 4 PHASE MOVE BOOST: 16%    + 55 Movement Speed    + 24 Damage Cooldown: 8

Why Phase boots? Gives you attack damage, and gives phase skill (+ms and can walk through creep/heroes).

3. Force Staff
Total cost: 2350
Recipe: Staff of Wizardy + Ring of Regen + Recipe

Active: Force - Pushes any target unit 600 units in the direction it is facing. Double click to self-cast. + 10 Intelligence    + 3 HP Regeneration Manacost: 25    Cooldown: 20

Why Force Staff? ForceStaff is useful on many purposes, you can initiate a teamfight with ForceStaff, or you can save somebody, or you can save yourself.

4.  Schyte of Vyse
Total cost: 5675
Recipe: Mystic Staff + Ultimate Orb + Void Stone

Active: Hex - Turns a target unit into a harmless critter for 3.5 seconds. Destroys illusions. + 10 Strength   + 10 Agility  + 35 Intelligence + 150% Mana Regeneration Manacost: 100   Cooldown: 35

Why Schyte of Vyse? Very good item to initiate a teamfight. or to defend against somebody.

5. DPS Item is needed because you have a Focus Fire that attacks with maximum speed. So damage is a complete synergy of the Focus Fire.

	DAEDLUS	MKB	ABYSSAL	DIVINE RAPIER
DAMAGE	81	88	100	300
ABILITY	CRITICAL 2.4	100% HITS	STUN	NONE
CHANCE	25%	MINIBASH 35% DAMAGE: 100	MELEE: 25 % RANGE: 10%	NONE
OTHER	NONE	+15 ATK SPEED	+10 STRENGTH 2 SEC STUN	NONE

DAEDLUS: Daedlus will provide you with a powerful Critical Strike. So if your normall attack not trigger your ultimate, deadlus can still provide you with a critical.  

MKB: 100% HITRATE will helps you to fight some evasion heroes like Mortred or Rikimaru.

ABYSSAL: A decent +100 damage and makes you become a Stunner

RAPIER: Be careful if you choose to hold this. 1 hit kill is a sure. 2-3 hits is the worst. Need protection from your support. Must come if the situation is clear safe for you to come inside the teamfight. Need some disabler friends.

6. Or you may choose an orb type weapon, this is also a very good choice for a Windrunner

Desolator Total cost: 5675 Recipe: 2x Mithrill Hammer + Recipe	Mjolnir Total Cost: 5400 Recipe: Maelstorm+ Hyperstone + Recipe	Diffusal Blade Total Cost: 3300 Recipe: 2x Blade of Alacrity + Robe of the Magi + Recipe
Passive: Corruption - Your attacks reduce target's armor. Desolator is a Unique Attack Modifier, and does not stack with other Unique Attack Modifiers. + 60 Damage     ARMOR REDUCTION: 6	Active: Static Charge - Places a charged shield on a target unit Passive: Chain Lightning - Grants a chance to release Chain Lighting on attack, dealing damage to multiple targets. Mjollnir is a Unique Attack Modifier that stacks with other Unique Attack Modifiers, but overrides them when Chain Lightning occurs. + 24 Damage + 80 Attack Speed CHANCE TO CHAIN: 25% CHAIN DAMAGE: 160 Manacost: 50    Cooldown: 35	Active: Purge - Purges a  target unit, removing buffs, slowing, and dealing damage if it is a summoned unit. Passive: Feedback - Your attacks burn 20/36 mana and deal the same amount in damage. Upgradable. Diffusal Blade is a Unique Attack Modifier, and does not stack with other Unique Attack Modifiers. + 22/26 Agility + 6/10 Intelligence Cooldown: 12
Why Desolator? This item is always good for a carry, because carry need to deal more damage, and with the minus armor, the damage will be amplified	Why Mjolnir? Mjolnir increases attack speed by a lot. This skill also gives the Lightning ability. Very good item to hold as a carry.	Why Diffusal? This is considered a good item for a carry. It gives additional pure damage and the orb effect to reduce enemy's mana with each attack. Diffusal also gives a Purge ability that can be used to slow down enemy.

GOOD ALLIES

1. Carries
(Example: Magine, Void, Luna)

Carries should come after you initiate a teamfight, and they should the right click and use all their skills to the enemies.

BAD ENEMIES

1. Silence Heroes
(Example: Doom, Balanar, Silencer)

Beware of Silence because you use skills to attack the opponent. If you cannot use your skill, you become weak and can easily harassed.


2. High Instant Damage
(Example: Lina, Lion, Tiny)

You are not so tanky hero. Although you have a physical immunity skill, but a high instant spell damage will be so painful for you.

Dota 2 - Storm Spirit Build Guide

BIO
Storm Spirit is literally a force of nature--the wild power of wind and weather, bottled in human form. And a boisterous, jovial, irrepressible form it is! As jolly as a favorite uncle, he injects every scene with crackling energy. But it was not always thus, and there was tragedy in his creation. Generations ago, in the plains beyond the Wailing Mountains, a good people lay starving in drought and famine. A simple elementalist, Thunderkeg by name, used a forbidden spell to summon the spirit of the storm, asking for rain. Enraged at this mortal's presumption, the Storm Celestial known as Raijin lay waste to the land, scouring it bare with winds and flood. Thunderkeg was no match for the Celestial--at least until he cast a suicidal spell that forged their fates into one: he captured the Celestial in the cage of his own body. Trapped together, Thunderkeg's boundless good humor fused with Raijin's crazed energy, creating the jovial Raijin Thunderkeg, a Celestial who walks the world in physical form.

INTRODUCTION
Storm Spirit is considered a nuker, initiator, and disabler in DotA. Storm can move so fast like a lightning using his ultimate Lightning Bolt and then catch somebody and make him can't move and then kill him with Storm's nuke and attack.
Storm is considered a ganker and initiator, his time to shine is on mid game where lots of gank happening. And because his high mobility he can gank enemy easily and help the team to get many kills.

PROS	CONS
Low cooldown on his nukes, 0 Cooldown on his ultimate	Mana dependant
A very good chaser, 0 Cooldown jumping skill + 1 disable + 1 slower-damage	Squishy
High mobility because of his ultimate
If have lots of mana, become very strong and unstoppable

ROLE

Ranged - Carry - Initiator - Escape - Disabler

STATS

LEVEL	1	15	25
HIT POINTS	511	910	1,575	SIGHT RANGE	1800 / 800
MANA	299	772	1,370	ATTACK RANGE	480
DAMAGE	45-55	81-91	127-137	MISSILE SPEED	1100
ARMOR	5	9	14

ABILITIES
1. Static Remnant

Creates an explosively charged image of Storm Spirit that lasts 12 seconds and will detonate and deal damage if an enemy unit comes near it.

MANA COST: 70/80/90/100	COOLDOWN: 3.50
ABILITY: NO TARGET	DAMAGE: MAGICAL
DAMAGE: 140 / 180 / 220 / 260	RADIUS: 260

Raijin Thunderkeg's duality allows him to admire himself in shocking fashion.
This is your nuking skill. This skill is spammable. With only 3.5 sec cooldown, you can spam this skill anytime you want. The damage is considered high and hurt your opponents.
You can use this skill to farm the creeps, or to harass your enemy. Harassing enemy with this skill you need to be close to the enemy, and damaging your target. By jumping using your ultimate and pull your enemy using Vortex, you will close enough and can nuke your enemy using Remnant and deal some damage.

2. Electric Vortex

A vortex that pulls an enemy unit to Storm Spirit's location, it also slows the Storm Spirit by 50% for 3 seconds.

MANA COST: 100/110/120/130	COOLDOWN: 20
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DURATION: 1 / 1.5 / 2 / 2.5

Raijin's thunderous, boisterous energy often draws others into an electrifying situation.
This is your disabling skill. You pull a target into you so you and your team can attack him freely. A good skill for ganking. And also by doing this, you get an Overload charge to help you harass your target.
You need this to initiate a teamfight after you use the Lightning Ball, then you should disable an enemy and harass him.

3. Overload

Casting a spell creates an electrical charge, which is released in a burst on his next attack, dealing damage and slowing nearby enemies.

ABILITY: PASSIVE	DAMAGE: MAGICAL
DAMAGE: 30 / 50 / 70 / 90	MOVEMENT SLOW: 80%
ATTACK SLOW: 50%	DURATION: 0.6 / 0.6 / 0.6 / 0.6

Pow! Zip! Zap!
Everytime you cast a spell, you get a charge in your next attack, it contains +damage and a slowing ability. A very good skill for chasing and harassing a target because you will slow down your target and it will makes you can catch your target. You get a charge everytime you use Ball Lightning, Electric Vortex, or Remnant, so this skill is almost sure will come out in in every situation so you can get extra +slow and damage you need to harass and catch your enemy.

4. Ball Lightning

Storm Spirit becomes volatile electricity, charging across the battlefield until he depletes his mana or reaches his target. The mana activation cost is 15+7% of his total mana pool, and the cost per 100 units traveled is 10+1% of his total mana pool. Damage is expressed in damage per 100 units traveled.

MANA COST: 15/15/15/15	ABILITY: POINT TARGET
DAMAGE: MAGICAL	DAMAGE: 8 / 12 / 16
SPEED: 1250 / 1875 / 2500	RADIUS: 125 / 200 / 275
MANA DRAIN PER UNIT: 1%

The Storm is coming in.
This skill is the trademark of Storm Spirit, a skill to jump anywhere you want at least you have a mana. You need this skill to catch enemy, harass them, or can make you escape easily.
You deal damage in the path of this skill, the more range you jumps, the more damage it deals.

SKILLBUILD

Level 1: Static Remnant
Level 2: Electric Vortex
Level 3: Static Remnant
Level 4: Overload
Level 5: Static Remnant
Level 6: Ball Lightning
Level 7: Static Remnant
Level 8: Electric Vortex
Level 9 : Electric Vortex
Level 10: Electric Vortex
Level 11: Ball Lightning
Level 12: Overload
Level 13: Overload
Level 14: Overload
Level 15: Stats
Level 16: Ball Lightning
Level 17-25: Stats

You can take Electric Vortex for level 1 if you want to get firtblood and should disable the enemy on level 1.
Actually if there is already a disabler on your team, Remnant can also helps you to get firstblood by damaging the enemy.

Why maxed Static Remnant first?  This is your main nuke, you will need this for ganking, farming, and killing or early mid game.

Why maxed Electric Vortex before Overload? The longer the disable, the better for the team because the team gets more time damaging the disabled target.

STRATEGY
Early Game
On early game, you should get some farms. You need farms to buy some mana items to get lots of mana because mana is your true source of power. You are very mana dependent. No mana = useless, Lots of mana is the same as godlike. Because of your ultimate: Ball Lightning, you can rape your enemy, and make enemy confused because of your high mobility and high damage from the Ball and Remnant, + your attack and also Overload. You need mana for doing that, Ball absorbs lots of mana, but it's so good because you can move freely around the area and easily harass enemy and also make enemy can't catch you because you will easily escape from them.
By using some Remnant, you can kills some creeps in a blow. This will faster your farm. The faster your farm , the stronger you are compared to your opponent. For faster farm, you can farm the jungles too. By using 3 remnant, you can kill the big camps easily. Remnant is the main weapon of your camping that will deal tons of damage to the creeps.

Mid Game
Mid game is the right time for you to show off. Here you will gain your maximum potential. You need to gank lots of times and keep harassing and killing enemies to help your team and shine in the game.
You need to combine all of your 4 skills into the action. Use Ball first, and the after you arrive in front of your opponent, use Vortex to disable your enemy and use Remnant to nuke your target, and then harass him using Overload and keep harassing him using normal attack and Remnant. If your target tries to run, you can catch him easily using Ball and Overload to slow down the target so your target can't escape from you anymore.

Late Game
If you succeeded on mid game, you will likely to shine on late game because you should already have some nice items to conquer your opponent and also already on high levels. High level Storm gain high mobility because he already have tons of mana. And with high mana, you can cast Ball Lightning anytime you want so you can move and jump freely around an area and can confuse your opponent. So you can harass them using Ball Lightning's damage, Vortex and Overload, and also hex if you already have Sheepstick. And with the help of your friends after you disables and damaging the enemy, your team should dominate the opponent on the late game stage.

In a teamfight, you can deal a high aoe damage using the Ball Lightning by casting this far away from the  teamfight, the damage will be so high and can hurt lots of opponents. After got hit by the Ball, your team can easily kills all the enemies. And don't forget to use Vortex to one of the enemy.

ITEMS BUILD
1.  Power Threads
Total cost: 1400
Recipe: Gloves of Haste, Boots of Speed, Belt og Giant Strength/ Robe of Magi/ Band of Elvenskin

Active: Switch Attribute - Changes selected attribute between Strength, Agility and Intelligence. Flat movement speed bonuses from multiple pairs of boots do not stack. + 55 Movement Speed + 8 Selected Attribute   + 30 Attack Speed

Why Power Threads? This is a flexible shoes, Power Thread STR for survivability, AGI  for attack speed, INT for mana.

Tips: -This will gives you an instant +152 HP if you change it from pt.AGI / pt.INT into pt.STR . This is needed to survive in condition where your HP is so low while you're using AGI or INT Thread. -This will gives you an instant +104 mana if you change it from pt.AGI / pt.STR into pt.INT. This is needed to gain an instant mana in condition where your mana is so low while you need more mana to do the skill.

Alternative item: Arcane Boots
Total cost: 1450
Recipe: Boots of Speed + Energy Booster

Active: Replenish Mana - Restores mana in an area around the hero. Flat movement speed bonuses from multiple pairs of boots do not stack. + 60 Movement Speed + 250 Mana MANA RESTORED: 135 Mana Needed: 25    Cooldown: 55

Why Arcane Boots? You have spammable skills, so you need more mana, with this item, your mana will be fulfilled. And also to replenish mana of the team.

2. Orchid Malevolance
Total cost: 5025
Recipe: 2 x Ring of Obilivion + Recipe

Active: Soul Burn - Silences target unit for 5.0 seconds and amplifies the damage it takes by 30.0%. + 25 Intelligence    + 30 Attack Speed    + 30 Damage   + 150% Mana Regeneration Manacost: 100    Cooldown: 18

Why Orchid? You need this to get lots of mana regen. Mana regen is the main thing for your success. You need mana regen for always using Ball Lightning and other skill.

Orchid also add damages and attack speed. And also gives a silence skill and amplify damage for a single target. Silence is very good for ganking purpose. A silenced target can't do anything so your team can easily harass enemies.

3. Black King Bar
Total cost:: 3900
Recipe: Ogre Axe, Mithril Hammer, Recipe

Active: Avatar - Grants magic immunity. Duration and cooldown decrease with each use. Some Ultimate abilities are able to disable through Black King Bar. + 10 Strength + 24 Damage     DURATION: 10/9/8/7/6/5     Cooldown: 80

Why Black King Bar? It gives you survivability in a teamfight because you will get magic immunity during teamfights. Magic immune helps you to always doing action in the teamfight because no enemy can't stop you or damaging you with their spells.

4.  Schyte of Vyse
Total cost: 5675
Recipe: Mystic Staff + Ultimate Orb + Void Stone

Active: Hex - Turns a target unit into a harmless critter for 3.5 seconds. Destroys illusions. + 10 Strength   + 10 Agility  + 35 Intelligence + 150% Mana Regeneration Manacost: 100   Cooldown: 35

Why Schyte of Vyse? Very good item to initiate a teamfight. Gives you a disable and makes you have 2 disables, Vortex and Hex. By disabling your enemy, you make them can't use the skills and so your team can attack enemies easily.

5. Shivs's Guard
Total cost: 4700
Recipe: Plate Mail + Mystic Staff + Recipe

Active: Arctic Blast - Emits a freezing wave that does 200 damage to enemies and slows their movement by -40% for 4.0 seconds. Passive: Freezing Aura - Reduces attack speed on enemies. Multiple instances of Freezing Aura do not stack. + 30 Intelligence   + 15 Armor AURA SLOW: 25% Manacost: 100   Cooldown:   30

Why Shiva's? A good iteam to slow down and nuking enemies in the area. The slower ability will makes enemies have a hard time in moving and attacking, and the damage will reduce enemies Hp in the AoE.
The +Armor makes you become tanky and can survive in the though teamfight.
Also helps you chase enemies faster because this item will slow down your target. + Arctic Blast (More Slow and 200 damage)

SITUATIONAL 

a. Bloodstone 
(You can get this for your 3th / 4th item)
Total Cost:
Recipe: Preserverance + Soul Booster

Passive: Bloodpact - Starts with 6 charges. Gains 1 charge each time an enemy hero dies within 1675 range. Each charge bestows 1 mana regeneration per second, reduces gold lost from death by 25, and reduces respawn time by 4 seconds. When the bearer dies, restores 400 HP + 30 HP per charge to allied units within 1675 units, then loses a third of its charges. While dead, the bearer continues to receive experience at the death location and gives 1800 unit vision there. + 500 Health + 400 Mana     + 9 HP Regeneration     + 200% Mana Regeneration

Bloodstone gives +HP and HP regen that makes you tanky to survive in the teamfight, and also gives some mana and mana regeneration to helps you spam the skills. And the most important is: if you succeed in getting lots of kills, you will get a very high mana regeneration and and that will makes your mana is ready to use Ball lightning anytime and makes you unstoppable because enemy will be very hard to catch you. Very Recommended.

b. Linken Sphere
(Good against doom or tinker)
Total Cost: 5175
Recipe: Ultimate Orb + Preserverance

Passive: Spellblock - Blocks most targeted spells once every 20 seconds. + 15 All Attributes                   + 6 HP Regeneration + 150% Mana Regeneration    + 10 Damage

Why Linken Sphere?
-Great survivability item for escape and  for teamfight, it will block a single targetted spell every 20 seconds
-Provide a great Mana regeneration to always fulfill your mana
-Linkens Sphere becomes more powerful in the late game because the teamfights time becomes longer and you can block 2 spells in a teamfight.

Late Game Item
i. Boots of Travel
Total cost: 2450
Recipe: Boots of Speed + Recipe

Active: Teleport - Teleports you to an allied non-hero unit or structure. Flat movement speed bonuses from multiple pairs of boots do not stack. + 100 Movement Speed Manacost: 75   Cooldown60

Why Boots of Travel? With the creeps becoming more powerful in pushing your base, you need fast teleport to save your Throne/Tree.
Also, this item will give you 1 free slot that is used for Teleport Scroll if you don't have this Boots.

GOOD ALLIES
a. Carries
(Example: Magine, Void, Luna)

Carries should come after you initiate a teamfight, and they should the right click and use all their skills to the enemies.

BAD ENEMIES
a. Silence Heroes
(Example: Doom, Balanar, Silencer)

Beware of Silence because you use skills to attack the opponent. If you cannot use your skill, you become weak and can easily harassed.