Clan of the Oni

Ninjutsu {2}{b}{b} ({2}{b}{b}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Clan of the Oni enters the battlefield from your hand, put two 3/1 black Human Ninja creature tokens onto the battlefield tapped and attacking.

"Our Masters sent us to deliver a message."