Krampus, The Punisher

First Strike
If Krampus deals damage to a creature lower
than 4/4, you may exile it. If you do, they get a Salmonella Emblem until your next untap step.
{6}{r}{g}: Sacrifice Krampus into target graveyard,
while there he will continue dealing his base
power as damage to opponents life, each time any
card is drawn. If that player pays {x} where X is
equal to all their potential mana they may
exile their graveyard,