Fall of the Titans is a rare Instant card from Oath of the Gatewatch Promos (POGW), collector number 109s. Current market price: — (foil $0.63), TCGplayer market prices via Scryfall.
Surge {X}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Fall of the Titans deals X damage to each of up to two targets.