Steamflogger of the Month is a rare Creature — Goblin Rigger card from Unstable (UST), collector number 94. Current market price: $0.22 (foil $0.67), TCGplayer market prices via Scryfall.
When this creature enters, it assembles a Contraption for each Contraption you control. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)