Underworld Rage-Hound is a common Creature — Elemental Dog card from Theros Beyond Death (THB), collector number 163. Current market price: $0.16 (foil $0.21), TCGplayer market prices via Scryfall.
This creature attacks each combat if able. Escape—{3}{R}, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.) This creature escapes with a +1/+1 counter on it.