Spring-Leaf Avenger is a rare Creature — Insect Ninja card from Kamigawa: Neon Dynasty (NEO), collector number 349. Current market price: $0.34 (foil $0.43), TCGplayer market prices via Scryfall.
Ninjutsu {3}{G} ({3}{G}, 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, return target permanent card from your graveyard to your hand.