March of the Multitudes is a mythic Instant card from Starter Commander Decks (SCD), collector number 236. Current market price: $0.64, TCGplayer market prices via Scryfall.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Create X 1/1 white Soldier creature tokens with lifelink.