Ruler of the End of the World is a Yu-Gi-Oh! trading card game card from the Magnificent Monsters set. It is a Ritual Effect Monster of the Fiend type with the DARK attribute. The card has a Level of 10, 3000 Attack, and 2900 Defense. It belongs to the End of the World archetype and features a Starlight Rare finish with Holo treatment. The card number is MAMO-EN121.
2026 • Yu-Gi-Oh! • Magnificent Monsters
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Ruler of the End of the World is a Yu-Gi-Oh! trading card game card from the Magnificent Monsters set. It is a Ritual Effect Monster of the Fiend type with the DARK attribute. The card has a Level of 10, 3000 Attack, and 2900 Defense. It belongs to the End of the World archetype and features a Starlight Rare finish with Holo treatment. The card number is MAMO-EN121.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Ruler of the End of the World
Game
Yu-Gi-Oh!
Rarity, print treatment, and game-specific stats for this card.
Starlight Rare
Card Stock
English
Holo
Dark
Fiend
10
3000 / 2900
End of the World
Abilities, attacks, oracle text, and flavor text printed on the card.
You can Ritual Summon this card with an "End of the World" card. This card's name becomes "Demise, King of Armageddon" while in the hand or on the field. You can only use each of the following effects of "Ruler of the End of the World" once per turn. You can reveal this card in your hand, pay 2000 LP, then banish 1 Ritual Spell from your Deck; apply that card's activation effect that Ritual Summons a monster. You can pay 2000 LP; destroy all other cards on the field, then this card gains 2900 ATK.
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