Coiling Stalker is a common Creature — Snake Ninja card from Kamigawa: Neon Dynasty (NEO), collector number 179. Current market price: $0.21 (foil $0.24), TCGplayer market prices via Scryfall.
Ninjutsu {1}{G} ({1}{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, put a +1/+1 counter on target creature you control that doesn't have a +1/+1 counter on it.