Reign-Beaux, Overlord of Dark World

Level 7 DARK/Fiend Effect
2500 ATK / 1800 DEF

If this card is discarded from your hand to your Graveyard by an opponent's card effect: Special Summon this card from the Graveyard. When this card is Special Summoned this way: Destroy all monsters your opponent controls OR all Spell/Trap Cards they control.

Rulings – Yugipedia

Printings:

Strike of Neos: STON-EN017 (Ultimate Rare) - 2007-02-28
Strike of Neos: STON-EN017 (Ultra Rare) - 2007-02-28
Gates of the Underworld Structure Deck: SDGU-EN014 (Common) - 2011-10-13
Structure Deck: Dark World: SR13-EN004 (Common) - 2022-12-01
Speed Duel GX: Duelists of Shadows: SGX3-ENI14 (Common) - 2023-03-30

Prices:

Cardmarket: 0.12 €
TCGplayer: $ 0.12