Resounding Thunder is a common Instant card from Shards of Alara (ALA), collector number 110. Current market price: $0.14 (foil $0.50), TCGplayer market prices via Scryfall.
Resounding Thunder deals 3 damage to any target. Cycling {5}{B}{R}{G} ({5}{B}{R}{G}, Discard this card: Draw a card.) When you cycle this card, it deals 6 damage to any target.