Bolt Hound is a uncommon Creature — Elemental Dog card from Core Set 2021 (M21), collector number 131. Current market price: $0.30 (foil $0.34), TCGplayer market prices via Scryfall.
Haste (This creature can attack and {T} as soon as it comes under your control.) Whenever this creature attacks, other creatures you control get +1/+0 until end of turn.