Andariel by varkarrus

Level 1:

Oppurtunist: QUEST: Stun 15 enemy heroes with Malevolent Cloud: REWARD: Increase Anguish's damage bonus to 50%

Toxic Wasteland: QUEST: Hit 15 heroes with Noxious Burst who are already being damaged by Noxious Burst: REWARD: For every hero hit, it deals an additional 10 damage. When the quest is complete, increase its radius by 20%.

Lethal Poison: The DoT that Andariel applies with her basic attacks lasts for 20 seconds against minions and mercenaries and deals double damage to them.

Level 4:

Noxious Mist: Noxious Burst leaves behind a cloud that deals 80+4% damage per second to enemies inside it (ticks every 0.0625 seconds). The cloud lasts 5 seconds.

Siphon: Dealing damage increases Andariel's health and mana regeneration by 150% for 1 second.

Chemical Warfare: Malevolent Cloud travels for an additional 1 second, and increases in radius 30% faster.

Level 7:

Adrenaline: Damaging an enemy hero with a basic attack grants 30 armor for 1.5 seconds. PASSIVE: Attack speed increased by 15%.

Neutralize: Hitting an enemy with Toxic Dart grants 1 charge of Dampen Magic, which increases spell armor by 50% for 1 second. Holds up to 2 charges.

Plaguespreader: Toxic Dart cleaves for 60% of the damage dealt to the primary target in a small cone.

Level 10:

Anguish
Killer Sting

Level 13:

Spray: Toxic Dart has 1.5 second increased CD and costs 10 more mana, but fires 2 additional fully talented darts for a 30 degree cone. Darts will pass through targets already hit by one without damaging them.

Poison Synergy: Toxic Dart refreshes the duration of Noxious Burst's DoT

Suffocate: Enemies that take damage from Noxious Cloud are silenced for 0.1 seconds.

Level 16:

Fester: Activate to take damage equal to 5% of your CURRENT health, and increase the ability power of your basic abilities by 30% for 5 seconds.

Toxic Overdrive: Activate to make your basic attacks ranged, but cost 10 mana each, for 10 seconds. CD: 30 seconds.

Cloudy Days: Malevolent Cloud has 4 seconds reduced CD.

Level 20:

Torment: Anguish reduces healing received by 75% for the duration.

Dessication: Killer Sting's damage is increased by a further 40% against CCd opponents.

Toxic Bolt: Teleport a short distance, and cast a Noxious Burst with 50% increased radius on the location you arrive at. Radius bonus stacks multiplicatively with Toxic Wasteland. CD: 60 seconds.

Mercy(less) Kill: Toxic Dart instantly kills CCd targets underneath 10% of their max HP.