Flame Discharge is a uncommon Instant card from Kamigawa: Neon Dynasty (NEO), collector number 142. Current market price: $0.07 (foil $0.16), TCGplayer market prices via Scryfall.
Flame Discharge deals X damage to target creature or planeswalker. If you controlled a modified creature as you cast this spell, it deals X plus 2 damage instead. (Equipment, Auras you control, and counters are modifications.)