Zon'ozz attacks the Raiding ally with the highest remaining health if able, and he has +3 ATK while attacking an ally.
Void of the Unmaking (Deathwing Stages 2+): When Zon'ozz deals fatal combat damage to a defending Raiding ally, that ally's controller removes the top card of his deck from the game. Zon'ozz deals shadow damage equal to that card's cost to each other Raiding hero.