Stridehangar Automaton is a rare Artifact Creature — Construct card from Aetherdrift Commander (DRC), collector number 19. Current market price: $2.63, TCGplayer market prices via Scryfall.
Thopters you control get +1/+1. If one or more artifact tokens would be created under your control, those tokens plus an additional 1/1 colorless Thopter artifact creature token with flying are created instead.