Steel Ronin

Ninjutsu {w/u}{w/u}{w}{w} (Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
"The Steel Ronin have come to fight for you to the last. They are bound to guarding these tombs as penance and may as yet regain their honor in this battle." - Adviser