Assquatch is a rare Creature — Donkey card from Unhinged (UNH), collector number 71. Current market price: $2.30 (foil $65.00), TCGplayer market prices via Scryfall.
Each other Donkey gets +1½/+1½. Whenever another Donkey enters, untap target creature and gain control of it until end of turn. That creature gains haste until end of turn.