Saheeli, Jewel of Avishkar is a uncommon Legendary Creature — Human Artificer card from Reality Fracture (FRA), collector number 275. Current market price: $0.25 (foil $0.33), TCGplayer market prices via Scryfall.
Thopters you control have haste. Whenever you cast a noncreature spell, create a 1/1 colorless Thopter artifact creature token with flying.