Skullpact

Creatures have process 1. (Whenever this creature attacks, you may put up to one card in exile in its owner's graveyard.)
Whenever a player would put a card they own in exile into their graveyard, you may pay {1}. If you do, they put a card you own in exile in your graveyard instead.
When Skullpact dies, return a creature card from a graveyard to the battlefield at random.