Advanced format ruling
Backfire
Card effect (current official text)If a face-up FIRE monster(s) you control is destroyed and sent to the GY: Inflict 500 damage to your opponent.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.