Bomat Courier is a rare Artifact Creature — Construct card from Kaladesh Promos (PKLD), collector number 199s. Current market price: — (foil $2.17), TCGplayer market prices via Scryfall.
Haste Whenever this creature attacks, exile the top card of your library face down. (You can't look at it.) {R}, Discard your hand, Sacrifice this creature: Put all cards exiled with this creature into their owners' hands.