Sindur, the Hidden Strike

Ninjutsu {1}{b}, (Return an unblocked attacker you
control to hand: Put this card onto the battlefield from
your hand tapped and attacking.)
When Sindur deals combat damage to a player
reveal the top card of your library. If it is a
creature, put that card onto the battlefield
tapped. If it is a noncreature nonland, Sindur
deals damage equal to its converted mana cost
to any target and put that card into your hand.