Silent-Blade Oni
From New Capenna Commander set
Silent-Blade Oni
Creature — Demon Ninja
6/5
Ninjutsu
(
, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost.