Ambuscade Shaman is a uncommon Creature — Orc Shaman card from Dragons of Tarkir (DTK), collector number 87. Current market price: $0.04 (foil $0.39), TCGplayer market prices via Scryfall.
Whenever this creature or another creature you control enters, that creature gets +2/+2 until end of turn. Dash {3}{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.)