Volcanic Doomfire

This card cannot be Normal Summoned or Set. This card can only be Special Summoned by sending a face-up "Tri-Blaze Accelerator" you control to the Graveyard. During your opponent's Battle Phase, your opponent must attack this monster with any Attack Position monsters they control. When this card destroys a monster and sends it to the Graveyard, destroy all monsters your opponent controls and inflict 500 damage to your opponent for each monster destroyed by this effect.

Pyro FIRE Effect Monster 8 effect