Fallen Shinobi is a rare Creature — Zombie Ninja card from Modern Horizons (MH1), collector number 199. Current market price: $5.16 (foil $22.50), TCGplayer market prices via Scryfall.
Ninjutsu {2}{U}{B} ({2}{U}{B}, 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, that player exiles the top two cards of their library. Until end of turn, you may play those cards without paying their mana costs.