Yu-Gi-Oh! · The Duelist Genesis

Thought Ruler Archfiend

French name: Archdémon du Monde Mental

TDGS-EN044Ultra Rare

Thought Ruler Archfiend (The Duelist Genesis TDGS-EN044) has a market price of US$9.76 to US$18.16 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

UnlimitedUS$9.76Low US$7.00

1st EditionUS$18.16Low US$16.98

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 an opponent's monster by battle, gain Life Points equal to the original ATK of the destroyed monster. By paying 1000 Life Points, negate the activation and effect of a Spell or Trap Card that targets 1 face-up Psychic-Type monster you control and destroy it.

About this card

Thought Ruler Archfiend is card TDGS-EN044 in The Duelist Genesis, a Yu-Gi-Oh! set released Sep 2, 2008. Rarity: Ultra Rare. Finishes: Unlimited, 1st Edition. Reference market price on Nov 9, 2026: US$9.76 (Unlimited), US$18.16 (1st Edition). Over the last 30 days, the Unlimited price went down 0.6%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.

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