Purphoros's Intervention is a rare Sorcery card from Theros Beyond Death Promos (PTHB), collector number 151p. Current market price: $0.30 (foil $0.50), TCGplayer market prices via Scryfall.
Choose one — • Create an X/1 red Elemental creature token with trample and haste. Sacrifice it at the beginning of the next end step. • Purphoros's Intervention deals twice X damage to target creature or planeswalker.