Pitiless Horde is a rare Creature — Orc Berserker card from Dragons of Tarkir (DTK), collector number 112. Current market price: $0.18 (foil $0.15), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, you lose 2 life. Dash {2}{B}{B} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)