Daru Stinger is a common Creature — Soldier card from Legions (LGN), collector number 10. Current market price: $0.16 (foil $0.50), TCGplayer market prices via Scryfall.
Amplify 1 (As this creature enters, put a +1/+1 counter on it for each Soldier card you reveal in your hand.) {T}: This creature deals damage equal to the number of +1/+1 counters on it to target attacking or blocking creature.