Nuumai, Dreamer's Companion

Convoke
Whenever a creature attacks, flip a coin. If heads,
the creature's owner gains 2 life. If tails, the
creature deals 0 damage and your opponent gains
2 life. Whenever a creature dies (including this
card), exile it instead. You may pay an exiled
creature's cost to return it to your hand. This
effect applies to all players, even if this card is in
exile. If this card is in exile, you must pay this
card's cost if able and return it to your hand.
You're a crazy ass, but you're my crazy as