Pervader by Koetetsu

Gains 100% increased damage on your next attack or ability if the enemy has no sight of you for 5 seconds. Wears off after an enemy hero is near you and has sight of you for 5 seconds.

Ability Key: Q
Energy Cost: 50
Cooldown: 6 seconds

Forms a bone blade and stabs an enemy Hero up close dealing 358 (+4%/level) damage.

Ability Key: W
Energy Cost: 60
Cooldown: 10 seconds

Regurgitates a highly adhesive form of creep on the target area slowing enemies that step into it by 40% (attack and movement speed) until they leave the affected area. Lasts for 6 seconds.

Ability Key: E
Energy Cost: 60
Cooldown: 14 seconds

Enters the body of a minion or hired mercenary (allied or enemy) and remain there undetected. Enemy heroes near your host will notice your infiltration if they stay close for 5 seconds and can attack your host to force you out. If your host suffers a stun or knockback you will also be forced out of them.

Ability Key: E

While inside your Host you may activate this to consume your host and get healed for 20% of your health. The host explodes and deals 278 (+4%/level) damage to nearby enemies.

Ability Key: R
Mana Cost: 150
Cooldown: 100 seconds

(Requires you to be inside a host)

Infects your host with the zerg virus, transforming them into an Aberration and giving you control over them. The Aberration has 1200 (+5%/level) health, deals 150% of your attack damage per attack and moves at 20% increased movement speed. The Aberration lasts for 20 seconds. You pop out of the Aberration if it expires or is killed.

Upgrade: Domination Complete

Adds your health in addition to the Aberration's making it last until killed and allows the use of Eviscerate, Hearthstone and Healing Fountains but increases the cooldown by 60 seconds. You die along with the Aberration if it is killed. 

Ability Key: R
Energy Cost: 100
Cooldown: 90 seconds

Infects nearby units with fungal spores reducing their movement speed by 10% per second up to 50% slow. 1 second after reaching 50% slow, affected enemies are rooted for 2 seconds. Deals 124 (+4%/level) damage per second.

Upgrade: Clogging Spores

Enemies are have their vision reduced while being slowed.

Burrows underground after a 3 second delay becoming invisible and losing vision above ground except for vision of allied units. Can move at 30% increased speed while tunneling.