Platoon Dispenser is a mythic Artifact Creature — Construct card from The Brothers' War Promos (PBRO), collector number 36p. Current market price: $1.23 (foil $1.15), TCGplayer market prices via Scryfall.
At the beginning of your end step, if you control two or more other creatures, draw a card. {3}{W}: Create a 1/1 colorless Soldier artifact creature token. Unearth {2}{W}{W}