Ojutai, the Great Teacher

Flying, Prowess
Whenever Ojutai, the Great Teacher attacks,
if you've cast 3 or more noncreature spells this
turn, Ojutai, the Great Teacher gains hexproof
until end of turn, and attacking creatures with
prowess gain vigilance until end of turn.
Untap them.
Whenever Ojutai, the Great Teacher deals
combat damage to a player, the next instant
or sorcery you cast has rebound.