Khitai, Breaker of Charms

Lifelink, haste
When Khitai, Breaker of Charms attacks, you may sacrifice an aura or equipment attached to it. If you do, choose one—
•Exile the top card of your library. Until the end of your next turn, you may play that card.
•You gain 3 life.
•Khitai deals 3 damage to any target.