Pegasus Stampede is a uncommon Sorcery card from Anthologies (ATH), collector number 12. Current market price: $0.40, TCGplayer market prices via Scryfall.
Buyback—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.) Create a 1/1 white Pegasus creature token with flying.