Cracktusk by varkarrus

Attacking a hero marks that Hero as your prey. Heroes that are your prey deal 75% damage to you. Heroes will remain your prey for 6 seconds, or until you choose a new Prey.

If you have no heroes marked as your prey, the resistance will apply to mercenaries, minions, and structures instead.

Stand still and channel. During this time, you can make 3 short ranged dashes. Moving or waiting too long before dashes cancels this ability. If you dash through your Prey, they are slowed and take damage.

Summon 2 zerglings near your Prey (global range), which will attack until they expire or your Prey dies. They will stick to the target even if you select a new prey.

If you have no prey, this will instead summon several zerglings near you who will attack nearby minions and mercenaries, but have a greatly reduced life time.

Deal damage to a target, then gain 200% movespeed for 4 seconds. Attacking while the movespeed is active cancels it.

Attacking reduces the CD of this ability.

Summon a bunch of (untargetable) zerglings that deal damage to targets around you as you move. The center of the swarm will follow you around, but doesn't quite match your normal movespeed.

Deals 200% damage to minions and mercenaries.

After a brief, interruptable channel, dig under ground, becoming invulnerable and invisible. You can move through terrain while burrowed, but at a reduced MS.
You can unburrow at any time, and it's instant.

CD of 8 seconds that starts after you unborrow.

Gain 40% movespeed for 5 seconds.
Killing minions and heroes reduces the CD.