Card Rulings:Crimson Fire

OCG Rulings

 * The player who activates "Crimson Fire" takes no damage from the effect to which "Crimson Fire" was chained. If your opponent activates "Tremendous Fire" and you chain "Crimson Fire", then your opponent takes 500 damage plus 2000 damage (double 1000) because of the effect of "Crimson Fire", for a total of 2500 damage.