Hidden Stockpile is a uncommon Enchantment card from Double Masters (2XM), collector number 201. Current market price: $0.39 (foil $0.36), TCGplayer market prices via Scryfall.
Revolt — At the beginning of your end step, if a permanent left the battlefield under your control this turn, create a 1/1 colorless Servo artifact creature token. {1}, Sacrifice a creature: Scry 1.