The One Who Waits

Lifelink, Deathtouch

Whenever you gain life, you create that many 0/1 white adept tokens.
{b}{b}Sacrifice a token: Target creature is -2/-2, if that creature would die, exile it instead.
You can play cards that are exiled from any player, if you were to cast for an exiled card, you can sacrifice one token for each mana worth of the card.