Majin, Promisewielder

+1: Lose 1 life and draw a card. You may use this ability at any time you could use an Instant.
-1: Target player reveals a card from their hand. You may choose to have it exiled. If you choose not to, they lose 1 life and you gain 1 life.
-3: Gain control of target creature until Majin, Promisewielder leaves the battlefield.