Volcanic Doomfire

Level 8 FIRE/Pyro Effect
3000 ATK / 1800 DEF

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.

Rulings – Yugipedia

Printings:

Force of the Breaker: FOTB-EN008 (Ultimate Rare) - 2007-05-16
Force of the Breaker: FOTB-EN008 (Ultra Rare) - 2007-05-16
Collectible Tins 2007 Wave 2: CT04-EN004 (Secret Rare) - 2007-11-15
Speed Duel GX: Duel Academy Box: SGX1-ENH01 (Common) - 2022-03-17
Speed Duel GX: Duel Academy Box: SGX1-ENH01 (Secret Rare) - 2022-03-17
Legendary Duelists: Soulburning Volcano: LD10-EN029 (Common) - 2023-08-10

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.11