Ninja of the Restless Tomb

Grave Ninjutsu {3}{b} ({3}{b}, Return an unblocked attacker you control to hand:
Put this card onto the battlefield from your graveyard tapped and attacking.)
Whenever Ninja of the Restless Tomb deals combat damage to a player, you may search your library for a creature card and put it into your graveyard. If you do, shuffle your library.