Urza's Rage is a mythic Instant card from Duel Decks: Phyrexia vs. the Coalition (DDE), collector number 36. Current market price: — (foil $0.48), TCGplayer market prices via Scryfall.
Kicker {8}{R} (You may pay an additional {8}{R} as you cast this spell.) This spell can't be countered. Urza's Rage deals 3 damage to any target. If this spell was kicked, instead it deals 10 damage to that permanent or player and the damage can't be prevented.