Countless Gears Renegade is a common Creature — Dwarf Artificer card from Aether Revolt (AER), collector number 13. Current market price: $0.04 (foil $0.49), TCGplayer market prices via Scryfall.
Revolt — When this creature enters, if a permanent left the battlefield under your control this turn, create a 1/1 colorless Servo artifact creature token.