Dylan, Master of The Yard

Delve
Effects your opponents control can not cause cards to leave your graveyard.
Whenever you sacrifice a creature, surveil 2 if this is the first time this ability has resolved this turn. If it's the second time, put two -1/-1 on target creature. If it's the third time, return up to one target creature with mana value 2 or less to the battlefield. If it's the fourth time, draw two cards.
Embalm{2}{b}{b}{b}