Yu-Gi-Oh! · Brothers of Legend

Thought Ruler Archfiend

French name: Archdémon du Monde Mental

BROL-EN070Ultra Rare

Thought Ruler Archfiend (Brothers of Legend BROL-EN070) has a market price of US$1.18 as of Nov 9, 2026.

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Price guide

The market price on TCGplayer, in US dollars: a guide, not an offer.

Market price

1st EditionUS$1.18Low US$0.63

As of Nov 9, 2026 · The market price is TCGplayer’s, in US dollars. It is a guide, not an offer.

Card details

Type: Synchro Monster
Level: 8
Attribute: DARK
Monster type: Psychic
Archetype: Archfiend
ATK: 2,700
DEF: 2,300

Card text

1 Tuner + 1 or more non-Tuner monsters If this card destroys a monster by battle and sends it to the Graveyard: Gain LP equal to that monster's original ATK in the Graveyard. During either player's turn, when a Spell/Trap Card is activated that targets exactly 1 Psychic-Type monster (and no other cards): You can pay 1000 LP; negate the activation, and if you do, destroy it.

About this card

Thought Ruler Archfiend is card BROL-EN070 in Brothers of Legend, a Yu-Gi-Oh! set released Oct 1, 2021. Rarity: Ultra Rare. Finishes: 1st Edition. Reference market price on Nov 9, 2026: US$1.18. Over the last 30 days, the 1st Edition price went down 21.9%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.