Sudden Shock is a uncommon Instant card from Time Spiral Remastered (TSR), collector number 194. Current market price: $0.14 (foil $0.45), TCGplayer market prices via Scryfall.
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Sudden Shock deals 2 damage to any target.