Guu, Dissolution Specialist

Vigilance, ward {3}, protection from Instants
Consume {1}{w}{b}: Exile target tapped creature an opponent controls until Guu, Dissolution Specialist leaves the battlefield.
Dissolve {x}{w}{b}: Put target creature card with mana value
{x} exiled with Guu, Dissolution Specialist into its owner's graveyard. You gain life equal to the power of the creature put into the graveyard this way.
'Your friend made for good eating. So, will you tell me what
I want to know, or go the same way