Rovok, Necro Monstrosity

Deathtouch
As Rovok, Necro Monstrosity enters the
battlefield, Choose a creature type.
{t}, {3}, Sacrifice a Creature of the chosen type:
Return target creature from a graveyard to the
battlefield, that creature is the chosen creature
type in addition to its other types and enters
the battlefield with an additional +1/+1
counter.