Dota 2 - Enigma Build Guide

BIO
Nothing is known of Enigma's background. There are only stories and legends, most of them apocryphal, passed down through the ages. In truth, Enigma is a mystery for whom the only true biography is description: he is a universal force, a consumer of worlds. He is a being of the void, at times corporeal, other times ethereal. A beast between the planes.

There are stories that say he was once a great alchemist who tried to unlock the secrets of the universe and was cursed for his arrogance. Other legends tell that he is an ancient being of strange gravity, the abyss personified-a twisted voice from out the original darkness, before the first light in the universe. And there are older legends that say he is the first collapsed star, a black hole grown complicated and sentient-his motivations unknowable, his power inexorable, a force of destruction unleashed upon existence itself.

INTRODUCTION
Enigma is one of the best initiator in DotA. He has Black Hole that will suck all nearby enemies and damaging them. While all enemies are being sucked, your team can easily harass - kills all enemies.

He is a great jungler on early game, with his ediolons. He can stay in the jungle until he gets all items he need to be ready for the action.

PROS	CONS
Have the best ultimate in the game	Kinda need a perfect positioning for Blackhole
A very good jungler	The longest cooldown for the utimate
Good pusher	Doesn't have an escape mechanism
A decent teamfight controller	Squishy
	Slow

ROLE

Ranged - Disabler - Initiator - Jungler - Pusher

STATS

LEVEL	1	15	25
HIT POINTS	473	1,032	1,811	SIGHT RANGE	1800 / 800
MANA	260	879	1,581	ATTACK RANGE	500
DAMAGE	42-48	90-96	144-150	MISSILE SPEED	900
ARMOR	4	6	10

ABILITIES
1. Malefice

Focuses Enigma's hatred on a target, causing it to take damage and become repeatedly stunned for multiple instances. An instance strikes every 2 seconds.

MANA COST: 110/130/150/160	COOLDOWN: 15
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DAMAGE: MAGICAL	STUN DURATION: 1 / 1 / 1 / 1
DAMAGE PER HIT: 40 / 40 / 65 / 65	INSTANCES: 1 / 2 / 2 / 3

The presence of Enigma causes a sensation of the nether pulling at one's very existence.
Stun enemy every 2 seconds. A good skill to helps you catch enemy. The damage is not so big but it's ok to help damaging your target.

2. Demonic Conversion

Splits a creep into three malevolent aspects of itself, all under Enigma's control. Repeated successful attacks cause them to multiply again; when this happens, the eidolons have their health restored.

MANA COST: 170/170/170/170	COOLDOWN: 35
ABILITY: UNIT TARGET	ATTACKS TO MULTIPLY: 6 / 6 / 6 / 6
EIDOLON HP: 180 / 200 / 220 / 240	EIDOLON DAMAGE: 20 / 28 / 38 / 47

Enigma is capable of tearing a being into another dimension - the result is a trio of ethereal eidolons that haunt the corporeal plane.
This is your jungling skill, you converts a small jungle creeps into eidolons that will tank the damage from jungle creeps and also helps killing them. Can't converts big jungle creeps like Centaur or Wildkin.

3. Midnight Pulse

Steeps an area in black magic, damaging enemy units based on their max HP.

MANA COST: 95/110/125/140	COOLDOWN: 25
ABILITY: POINT TARGET	DAMAGE: MAGICAL
RADIUS: 400 / 400 / 400 / 400	DAMAGE PER SECOND: 3% / 4% / 5% / 6%
DURATION: 8 / 8 / 8 / 8

A section of the world slowly descends into the void.
A skill that will damaging enemy that stand in the Aoe of this skill. The damage is considered good. a 3%-6% of max HP per second. A nice skill for harassing enemies in the teamfight.

4. Black Hole

CHANNELED - Summons a vortex that sucks in nearby enemy units. Enemies affected by Black Hole cannot move, attack, or cast spells. The closer units get to the center, the more damage is dealt.

MANA COST: 250/350/450	COOLDOWN: 200/190/180
ABILITY: CHANNELED, POINT TARGET	DAMAGE: MAGICAL
RADIUS: 500 / 500 / 500	MIN DAMAGE: 30 / 50 / 70
MAX DAMAGE: 60 / 100 / 140	DURATION: 4 / 4 / 4

The world trembles as Enigma channels the ethereal vortex of destruction, bringing it into the world of mortals.
This is the strongest ultimate in the game.  A Black Hole that sucks all nearby enemies and also damaging them. If you can cast this successfully and at least catch 2-3 heroes inside your Black Hole, it is almost a guarantee that your team will win the teamfight because while the enemy is being sucked by the Blackhole, your allies can easily harassing them.

SKILLBUILD

Level 1: Demonic Conversion
Level 2: Malefice
Level 3: Demonic Conversion
Level 4: Malefice
Level 5: Demonic Conversion
Level 6: Black Hole
Level 7: Demonic Conversion
Level 8: Malefice
Level 9 : Malefice
Level 10: Midnight Pulse
Level 11: Black Hole
Level 12: Midnight Pulse
Level 13: Midnight Pulse
Level 14: Midnight Pulse
Level 15: Stats
Level 16: Black Hole
Level 17-25: Stats

Why maxed Demonic Conversion first?  You need it for jungling, to raise creeps and use it for tanking and damaging the jungle creeps.

Why maxed Malefice before Midnight Pulse? Malefica is a targetted stun that is more needed on early- mid game in ganking activities. and the Midnight Pulse is more useful on the late game to damaging enemies in the teamfight.

STRATEGY
Early Game
On the early game, I recommend you to straight go into the jungle. Enigma is a nice jungler. He has Demonic Conversion to convert a creep into 3 Eidolons that can multiply itself and make you can stay in the jungle to farms on the early game. I recommend you to first stay on the easy camp until you have a level 2 Demonic Conversion that is stronger to be able tobeat the big creeps.
You may also needs a ward to gives you vision to the jungle entrance. So you can see if there is enemy going into your jungle and can immediately retreat.

Mid Game
Mid game is the ganking time! Everybody will roam around the map and find somebody to kill. So always keep your eye on the important place from where the enemy can comes up and always be careful. Always remember to replace the ward if the time is up and also always keeps an eye on the vision from the wards.
 You have some ganking skill here. So if you want to also participate in a gank, what you need to do is:
1. Comunicate with your teammates about who should be ganked, you should focus fire on 1 hero in a gank, because if you don't communicate well you may attack A and your teammates attack B, and that is a bad gank and can lead to failure on getting the kill.
2. If there is more than 1 enemy, imeediately come near your target,a and cast the Blackhole
3. If there is just 1 enemy and not their carry, Blackhole is not needed, you can just use the Malefice + Midnight Pulse

Late Game
You are the determinants for your team whether your team will have a good teamfight or not. Your Black Hole, that is the key of your team's success in every late game teamfight. If you successfully cast a Blackhole for 4 people, your team is 100% will dominate the enemy and win the teamfight easily.

ITEMS BUILD
1. Soul Ring
Total cost: 800
Recipe: Ring of Regen + Sage's Mask

Active: Sacrifice - Consume 150 HP to temporarily gain 150 Mana. Lasts 10 seconds. + 3 HP Regeneration + 50% Mana Regeneration Cooldown: 30 seconds

Why Soul Ring? It will meake your skill 'Spawn Spiderlings' more spammable in every situation in early game (to create more spiders, or to harass and get kills)

2. Mekansm
Total cost: 2306
Recipe: Headress + Buckler + Recipe

Active: Restore - Heals 250 HP and gives +2 armor in an area. Passive: Mekansm Aura - Bonus HP Regen in an area. Multiple instances of Mekansm Aura do not stack + 5 All Attributes + 5 Armor BONUS HP REGEN: 4 Mana:150   Cooldown:45

Why Mekansm? Heal for all allies in AoE, is a must for teamfights.

3. Boots of Speed
Cost: 450

+ 50 Movement Speed

Why this default boots? Well you need to save your gold foe Blink dagger and Bkb. So it will be wise to use this brown boots.

4. Dagger
Cost: 2150

Active: Blink - Teleport to a target point up to 1200 units away. If damage is taken from an enemy hero, Blink Dagger cannot be used for 3 seconds. Manacost: 75   Cooldown: 14

Blink Dagger is a perfect item for you for initiating purpose. This item will make you can jump straight into enemy's concentration so you can do a perfect Blackhole.

5. 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 teamfight. By magic immunity, you can keep fighting and cannot be interrupted (except from Beastmaster's Roar or Batrider's Lasso)

If your team still haven't got this item, then you must buy one for them.

6. Pipe of Insight
Total cost: 3628
Recipe: Hood of Defiance + Headress + Recipe

Active: Barrier - Gives nearby friendly units a shield that blocks 400 spell damage. Multiple instances of spell resistance from items do not stack. + 11 HP Regeneration + 30% Spell Resistance Manacost: 100   Cooldown: 60

Why Pipe of Insight? Gives barrier for all allies in AoE that Block 400 spell damage, very useful.

7. Shiva'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? This item is very good in teamfights, With the slowing of attack speed and movement speed, the enemy will hardly move and attack on the teamfight. A nice defense mechanism for your team.

8. Refresher Orb

Total cost: 5300
Recipe: Obilivion Staff + Preserverance + Recipe

Active: Reset Cooldowns - Resets the cooldowns of all your items and abilities. + 5 HP Regeneration + 200% Mana Regeneration    + 40 Damage    + 6 Intelligence Manacost: 375     Cooldown: 160

Why Refresher Orb? It will gives you ability to cast Blackhole 2 times that can demolish all of the enemies.

9. 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   Cooldown: 60

Boots of Travel is a Recommended for late game, for fast defense. Good item for support and initiator like you

GOOD ALLIES
1. Dark Seer

His Vacuum + Your black Hole is the worst nightmare for all the enemy team

2. Tidehutnter

His Ravage + Your black Hole is a perfect initiating combo.

3. Naga Siren

His Song + Your black Hole is a perfect setup for every teamfight

Dota 2 - Venomancer Build Guide

BIO
In the Acid Jungles of Jidi Isle, poison runs in the veins and bubbles in the guts of every creature that scuttles, climbs or swoops between fluorescent vines dripping with caustic sap. Yet even in this toxic menagerie, Venomancer is acknowledged as the most venomous. Ages ago, an Herbalist named Lesale crossed the Bay of Fradj by coracle, searching for potent essences that might be extracted from bark and root, and found instead a nightmare transformation. Two leagues into Jidi's jungle, Lesale encountered a reptile camouflaged as an epiphyte, which stung him as he mistakenly plucked it. In desperation, he used his partial knowledge of the jungle's herbal bounty, mixing the venom of the (swiftly throttled) reptile with the nectar of an armored orchid, to compound an antidote. In the moments before a black paralysis claimed him completely, he injected himself by orchid-thorn, and instantly fell into a coma. Seventeen years later, something stirred in the spot where he had fallen, throwing off the years' accumulation of humus: Venomancer. Lesale the Herbalist no longer-but Lesale the Deathbringer. His mind was all but erased, and his flesh had been consumed and replaced by a new type of matter-one fusing the venom of the reptile with the poisonous integument of the orchid. Jidi's Acid Jungles knew a new master, one before whom even the most vicious predators soon learned to bow or burrow for their lives. The lurid isle proved too confining, and some human hunger deep in the heart of the Venomancer drove Lesale out in search of new poisons-and new deaths to bring.

INTRODUCTION
Venomancer is Poison. He is a hero that uses poison in many ways. His normal attack is a poison. He have a slower-ganking skill taht is a poison. And his ultimate: is the strongest poison in DotA, if the enemies doesn't have a -spell damage. This skill will reduece this HP to almost death, but unfortunately, this skill cannot kills enemies, it jusr leave the enemy with 1 HP.  And his other skill, is summoning a small ward, but can't summon many wards and it will become strong because of it's large number. Usually, people pick this hero to become a support-warder because he doesn't need lots of farm to become strong. Venomancer, the most deadly poison caster in DotA.

PROS	CONS
His ultimate deals tons of AoE damage.	Squishy
A decent slower	His ultimate cannot kill the enemies
His wards is strong for pushing or counter pushing. Many wards also lead to auto last-hits	Doesn't have an escaping skill
Doesn't need lots of farms.
Very good on early-mid game harassing ability. Easy firstblood for you.
Wards give vision to the fog.

ROLE

Ranged - Support - Nuker - Initiator - Pusher

STATS

LEVEL	1	15	25
HIT POINTS	492	984	1,716	SIGHT RANGE	1800 / 800
MANA	195	514	1,001	ATTACK RANGE	450
DAMAGE	46-48	82-84	126-130	MISSILE SPEED	900
ARMOR	3	8	15

ABILITIES
1. Venomous Gale

Launches a ball of venom in a line, poisoning enemy units so that they take both initial damage and damage over time, as well as suffering slowed movement. Venomous Gale deals damage every 3 seconds over its duration.

MANA COST: 125	COOLDOWN: 22
ABILITY: POINT TARGET	DAMAGE: MAGICAL
DURATION: 15 / 15 / 15 / 15	STRIKE DAMAGE: 25 / 50 / 75 / 100
DAMAGE OVER TIME: 15 / 30 / 45 / 60	SLOW: 50% / 50% / 50% / 50%

A concoction of various stings, poisons, and toxins gathered from the jungles of Jidi Isle, victims surviving it are rare.
This is your main skill for slowing and harassing your enemy on early-mid game. 50% slow is the best early game lvl.1 slow on this game. With this skill, stealing firstblood is quite easy for your team, all you need to do is casting this skill on a target and harass him until he death. He cannot run because the slow movement speed is sjust too much for a hero to handle.
Not just the best slow on early game, this skill also does a decent damage for early game harassment. So, firstblood hunter is your job because of this skill.
You become a strong laner because of this skill, because if the enemy is struck with this skill, he should run or he will feel your harassment.

2. Poison Sting

Adds poison damage to Venomancer's normal attacks, slowing movement speed.

ABILITY: PASSIVE	DAMAGE: MAGICAL
DURATION: 6 / 7 / 8 / 9	DAMAGE OVER TIME: 5 / 10 / 15 / 204
SLOW: 11% / 12% / 13% / 14%

The paralytic sting of the creature which caused his transformation now belongs to the Venomancer.
This is one of your harassing skill, with this buff, your normal attack will contain poison that will deal damage per second and slowing the target.
You become one of the best harasser with this skill. Your attack become full of poison. Your enemy can't last hits properly because they will always harassed by your attack.

3. Plague Ward

Summons a plague ward to attack enemy units and structures. The ward is immune to magic.

MANA COST: 20/20/20/20	COOLDOWN: 5
ABILITY: POINT TARGET	DAMAGE: PHYSICAL
DURATION: 40 / 40 / 40 / 40	WARD HP: 75 / 200 / 325 / 450
WARD DAMAGE: 10 / 19 / 29 / 38

A mixture of his old herbalist talents and newfound toxic mastery creates a living embodiment of plague.
Summon ward that will attack the enemy. You can call 1 ward every 5 seconds. You must accumulate the wards to become useful. You need to call many wards to deal lots of damage to your opponent.
This ward is very effective for pushing or counter-pushing. Tower will be destroyed quickly using this ward. Creeps wave will be destroyed quickly using this ward.

4. Poison Nova

A spreading ring of poison that does damage over time to enemy units around Venomancer. Poison Nova's effect cannot bring units below 1 HP. Upgradable by Aghanim's Scepter.

MANA COST: 200/300/400	COOLDOWN: 140/120/100
ABILITY: NO TARGET	DAMAGE: MAGICAL
RADIUS: 830 / 830 / 830	DURATION: 12 / 14 / 15
DAMAGE: 36 / 58 / 81	SCEPTER COOLDOWN: 140 / 120 / 60
SCEPTER DURATION: 14 / 15 / 16	SCEPTER DAMAGE: 58 / 81 / 108

In the Acid Jungles, creatures releasing noxious poison to their attackers is common; Venomancer spreads this plague beyond the Jidi Isle.
This is one of the scariest AoE skill in DotA. Every hero that struck with this skill, will receive lots of damage per second until their Hp becomes very low. But unfortunately, this skill cannot kill a hero, this skill will leave the hero with 1 HP and will stop dealing damages. The damage is so high so everyone should run after get exposed by the poison except they have magic immunity or have Pipe's shield, or high magic resist.
You can gank with just 2-3 heroes and win against 5 heroes if this skill can deal maximum damage to all enemy.

SKILLBUILD

1. Full Harassing - Ganking Build
This build is focused on Venomous Gale and Poison Sting to harass enemies on early-mid game. With these 2 skills maxed on early game, you will get the maximum harassing potential to control the lane so your enemy cannot farm in your lane.
Level 1: Venomous Gale
Level 2: Poison Sting
Level 3: Venomous Gale
Level 4: Poison Sting
Level 5: Venomous Gale
Level 6: Poison Nova
Level 7: Venomous Gale
Level 8: Poison Sting
Level 9 : Poison Sting
Level 10: Plague Ward
Level 11: Poison Nova
Level 12: Plague Ward
Level 13: Plague Ward
Level 14: Plague Ward
Level 15: Stats
Level 16: Poison Nova
Level 17-25: Stats

Why take Venomous Gale for level 1? Venomous Gale is the best slowing skill on level 1. You will need this to slows the enemy to get the firstblood or at least harass them.
Or to escape if enemy wants to get firstblood by killing you, you should slowing them so they can't attack you.

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

Why maxed Poison Sting before Plague Ward? Because this is a full harassing build, you need Poison Sting better than Plague Ward because the poison from your attack is essential to give poison while you attacks the enemy. So max Poison Sting before Plague Ward for maximum harassment.

1. Pusher-CounterPush Build
This build is focuses on Plague Ward for pushing or counter-pushing.
Level 1: Venomous Gale
Level 2: Plague Ward
Level 3: Plague Ward
Level 4: Venomous Gale / Poison Sting
Level 5: Plague Ward
Level 6: Poison Nova 
Level 7: Plague Ward
Level 8: Poison Sting / Venomous Gale
Level 9 :  Venomous Gale
Level 10: Venomous Gale
Level 11: Poison Nova
Level 12: Poison Sting
Level 13: Poison Sting
Level 14: Poison Sting
Level 15: Stats
Level 16: Poison Nova
Level 17-25: Stats

Why take Venomous Gale for level 1? Venomous Gale is the best slowing skill on level 1. You will need this to slows the enemy to get the firstblood or at least harass them.
Or to escape if enemy wants to get firstblood by killing you, you should slowing them so they can't attack you.

Why maxed Plague Ward first?  Because of this is a push-counter_push build, you need the pushing power from your wards. Massive wards deal massive damage to creep waves and tower. You can destroy tower quickly with the wards.

Why maxed Venomous Gale before Poison Sting? The rule of DotA: Nukes for early game, physical damage for late game.  Venomous Gale is a nuke that will  deal more damage on early-mid game. And Poison Sting is for physical attacks that will be the main source of damages for mid-late game.

STRATEGY
Early Game
Venomancer have the best slower in this game on level 1. You need to use this advantage into maximum potential.
Since the game start, be aggressive by hunting firstblood and harass your enemy to the max. While your enemy is knocked with your 50% move-slow, you and your friends can easily harass the target and get firstblood.

1. If you choose the push-counterpush build, you need to max the Wards first. Ward is not so powerful if alone, so you need to stack the wards until it will surround the area and become the strong tools to deal damage to the area.
Pushing towers will be easy with your wards. And also don't forget about the defensive power of your wards, it can make your enemy to retreat and cancel their push.

2. If you choose the full-harassing build, your enemy will be so annoyed of you. They will have a hard time in last hitting/denying because you will always can harass them until low HP, or get kills if you're lucky.

You can last hits the creeps but this is not your priority because you don't need much farm to be strong, your skill alone is enough to fight your enemy.

Usually your team decide you to be the support for the team, so you may need to buy some wards, courier, or Smoke for the team.

Mid Game
Mid game is the time for ganking-party and early-pushing. Usually, the ganker from each team will roam around the map try to help other lane and get early kills. Ganker like Lion or you are the horoes who should do this job. What you need to to is finding easy lane with a delicious enemy to start with. Coordinate the gank with your partner and make sure your team gets the early kills you need. Your main skill is Venomous Gale, if this skill successfully hit the target, your team can easily harass and get kills. So first you need to master the using of this skill. This skill is a stright forward skill and not a targetted skill, so your opponent can move and evade this poison. What you need to do is to come nearer your opponent and make sure it will hits your target. Once it hits the target, your move will be easy. You and your friends can then harass your target easily.

Here on mid game, you should already have Poison Nova. This is your main skill. This is one of the biggest skill damage on this game. The damage is almost sure will reduce enemy's HP to a very low condition. But unfortunately, this skill cannot kill your target, it will leave the enemy with just 1 HP and will stop reducing HP. You will need another source of damage to get the kills, you can use your own skill like Venomous Gale or your friends can do the job.

If you choose to be the pusher-counterpusher build, then you need to maxing Plague Ward first. Stacking Plague is the best way to defend against enemy's push. The damage from accumulated Plagues in an area can destroy enemy's creep waves easily.The Plague is also needed for pushing, stacks the Plague near enemy's tower and deal continuous damage to tower and the creeps.

If you are the support of your team, remember to always buy the wards and place it in a strategiuc location to see enemy's movement.

Late Game
On late game, your job is still the same:
1. If you are the support for the team, remember to buy wards, smoke, or gem for the sake of the team.
2. Plague Ward stacking is the best way to defend against enemy's push.
3. Plague Ward stacking is also useful for pushing. It will destroy enemy's creep waves and towers.
4. Posion Nova have very high damage, you need a good positioning for this skill, try to at least use it for 3 heroes.
5. Always use Venomous Gale and Normal Attack to harass enemy's more.

That is 5 big things to remember. Try to do your job as good as you can. Venomancer job is to support the team by buying the teams supplies like Observer Wards, deal as much poison damage to enemies and to place lots of Plague Wards to push or counterpush.

ITEM BUILD
1. You need to buy courier and wards for the team. If someone already done it, you don't need to.
Courier: 150
Wards: 150

Courier: Transfer items from shop to heroes Wards: Scouting some important area to protect teams against some ganks.

You are the kind of hero that doesn't need lots of farm, so you will have golds to buy this kind of shit items. Your team will rely on courier and wards to become good. Courier will faster item transportation, and wards is needed to avoid enemy's gank.

2. 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.

3. Drum of Endurance
Total Cost: 1725
Recipe: Bracer + Robe of Magi + Recipe

Active: Endurance - Gives bonus +10 attack and +10% movement speed to surrounding allies. Passive: Swiftness Aura - Gives bonus attack and movement speed to surrounding allies. Multiple instances of Swiftness Aura do not stack. + 9 All Attributes + 3 Damage    AURA ATTACK SPEED: 5    AURA MOVE SPEED: 5% Cooldown: 30

Why Drums? It will gives you survivability with + STR and gives your team  +Attack speed and +Movement Speed that will benefit your whole team.

4. 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 will makes you can channel Poison Nova without getting interrupted. It  also gives you survivability in a teamfight because you will get magic immunity during teamfight.

5.  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. You are considered a support, and this item is one of the best supportive items you can get. Or  you can use this to defend against somebody by making him a chicken.

6. Aghanim Scepter

Passive: Ultimate Upgrade - Upgrades the ultimates of certain heroes. + 10 All Attributes   + 200 Health   + 150 Mana

Why Aghanim's Scepter? Increase damages from your ultimate. Nice item to win a teamfight. And this item also gives you more survivability because of its + HP.

If you need a better initiation you can buy

7. Blink Dagger
Cost: 2150

Active: Blink - Teleport to a target point up to 1200 units away. If damage is taken from an enemy hero, Blink Dagger cannot be used for 3 seconds. Manacost: 75   Cooldown: 14

Blink Dagger is a perfect item for initiating purpose.

GOOD ALLIES

1. Ancient Apparition

This hero is a very good partner for you because of his ultimate which is can be comboed with your ultimate Poison Nova.

His ultimate kill enemies in low HP. Poison Nova will never kill enemy if not accompanied by another skill/damage. And it will be very disappointing if there is an escaped enemy in 1 HP. And Ancient Apparition's ultimate Ice Blast will do the job, it will shatter all enemies in low HP.

2. 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.

3. Strong Ganker that can 2-3 vs 5 gank.
(Example: Invoker, SandKing)

You have the strongest poison in the game, Which will deal tons of damage to the AoE. And more AoE will completely bomb your opponents.

4. Low HP Killer
(Example: Zeus, Spectre, Bloodseeker)

If Someone somehow managed to escape with 1 HP, they can execute him.

BAD ENEMIES
1. High Instant Damage
(Example: Lina, Lion, Tiny)

They are all have deathly instant damage. And because you are squishy, you can instantly die, beware of them.

2 Pipe of Insight

You have deadly posion, but this item will counter it so your damage will be not as powerful as it should.

3. Blademail

Ruptured target move? you can feel the damage too.