Ishikawa, the Shadow

hexproof, first strike
Commander ninjitsu {1}{u}{b} ({u}{b}, Return an unblocked attacker you control to hand: Put this card
onto the battlefield from your hand or the command
zone tapped and attacking.)
Whenever a Ninja you control deals combat
damage to a player, search your library for a
Ninja card, reveal it, then shuffle your library
and put that card on top of it.