Pinnacle Emissary is a rare Artifact Creature — Robot card from Edge of Eternities Promos (PEOE), collector number 223p. Current market price: $1.42 (foil $1.76), TCGplayer market prices via Scryfall.
Whenever you cast an artifact spell, create a 1/1 colorless Drone artifact creature token with flying and "This token can block only creatures with flying." Warp {U/R} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)