Teacup, Agile Extraordinaire

Ninjutsu {u}{b} ({u}{b}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Teacup, Agile Extraordinaire deals combat damage to a player, you may draw a card, then discard a card.
Metalcraft - As long as you control three or more artifacts, Teacup, Agile Extraordinaire has menace.