Spell Burst is a uncommon Instant card from Time Spiral (TSP), collector number 79. Current market price: $0.40 (foil $8.02), TCGplayer market prices via Scryfall.
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Counter target spell with mana value X.