Orim's Thunder is a common Instant card from Commander Anthology Volume II (CM2), collector number 33. Current market price: $0.26, TCGplayer market prices via Scryfall.
Kicker {R} (You may pay an additional {R} as you cast this spell.) Destroy target artifact or enchantment. If this spell was kicked, it deals damage equal to that permanent's mana value to target creature.