Void is a special Sorcery card from Time Spiral Timeshifted (TSB), collector number 105. Current market price: $0.32 (foil $2.83), TCGplayer market prices via Scryfall.
Choose a number. Destroy all artifacts and creatures with mana value equal to that number. Then target player reveals their hand and discards all nonland cards with mana value equal to the number.