Vile Warlock

The Vile Warlock is a frail abomination that lives by sucking the life out of every living creature around it. He won't hurt his master, however, and might even share some HP if you pay him enough tribute.

Rare Skill
Soul Drain: The Vile Warlock links himself to his master and begins to siphon the souls out of all nearby enemies, converting 6% of all damage dealt into HP. This ability lasts 10 seconds and has a cooldown of 30 seconds. Costs 500 Mana.