Rebuild the City is a rare Sorcery card from March of the Machine: The Aftermath Promos (PMAT), collector number 43p. Current market price: $0.40 (foil $0.25), TCGplayer market prices via Scryfall.
Choose target land. Create three tokens that are copies of it, except they're 3/3 creatures in addition to their other types and they have vigilance and menace. (They're affected by summoning sickness.)
All March of the Machine: The Aftermath Promos cards and prices