Maverick Thopterist is a uncommon Creature — Human Artificer card from Aether Revolt (AER), collector number 130. Current market price: $0.22 (foil $0.35), TCGplayer market prices via Scryfall.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) When this creature enters, create two 1/1 colorless Thopter artifact creature tokens with flying.