Dual Dagger Shinobi

Doublestrike
Ninjutsu {b}{r} (Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Dual Dagger Shinobi deals combat damage to a player, put a +1+1 counter on another target Ninja you control with no +1+1 counters on it.