W. D Gaster, Royal Scientist

Double strike, shroud
When this creature dies, exile it,
and return it to the battlefield at the beginning of the next end step.
{3}{b}{b}{t} Choose one:
Exile target creature.
Its controller puts a Void counter on that creature.
Put a Void counter on target creature.
{5}{b}{b} Put all creatures with a Void counter on them onto the battlefield.