Nothing Personal

Shroud
Ninjutsu {1}{u}{b} (Return an unblocked attacker you control to your hand: put this card onto the battlefield tapped and attacking).
Whenever Nothing Personal deals combat damage to an opponent, search your library for an instant or sorcery card with a converted mana cost 2 or less, reveal it, put it into your hand, then shuffle.
{u}{b}: Return Nothing Personal to your hand.
"Nothing personal, kid."