Shinobi Who Walks In The Mist

Ninjutsu {1}{u}{b} ({1}{u}{b}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Shinobi Who Walks In The Mist deals combat damage to a player, it phases out. (While
it's phased out, it's treated as though it doesn't exist.
It phases in before you untap during your next untap
step.)