Cataclysmic Scorching Sunburner

If a face-up FIRE monster(s) you control is destroyed by battle or an opponent's card effect: You can Special Summon this card from your hand, then, you can inflict damage to your opponent equal to half the ATK of 1 of those destroyed FIRE monsters in your GY. You can only use this effect of "Cataclysmic Scorching Sunburner" once per turn.