Chainflinger is a common Creature — Beast card from Odyssey (ODY), collector number 181. Current market price: $0.14 (foil $0.40), TCGplayer market prices via Scryfall.
{1}{R}, {T}: This creature deals 1 damage to any target. Threshold — {2}{R}, {T}: This creature deals 2 damage to any target. Activate only if there are seven or more cards in your graveyard.