Yuriko, the Tiger's Shadow
Legendary Creature - Human Ninja | Power/Toughness: 1 / 3 (CMC 3)
Commander ninjutsu (, 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, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's converted mana cost.