Eidos the Underworld Monarch
Eidos the Underworld Monarch is a Effect Monster in the Monarch archetype, first released in 2025 in Duelist's Advance. It has 2 printings across 1 set (Ultra Rare, Starlight Rare). The cheapest copy is DUAD-EN017 Ultra Rare at $3.34; the most valuable is DUAD-EN017 Starlight Rare at $25.22. In the TCG it is currently unlimited (3 copies).
Market price · TCGPlayer
Updated Oct 1, 2026
$3.34 – $25.22
2 printings priced
Type
Spellcaster
Level
6
ATK
2400
DEF
1000
If this card is Normal or Special Summoned: You can add 1 "Monarch" Spell/Trap or 1 monster with 2800 ATK/1000 DEF from your Deck or GY to your hand. You can declare 1 Attribute; make 1 face-up monster on the field become that Attribute. If you Tribute Summon a monster with 2400 or more ATK and 1000 DEF, while this card is in your GY: You can add this card to your hand or Special Summon it. You can only use each effect of "Eidos the Underworld Monarch" once per turn.
Appears in 1 expansion
Printings (2)
| expansion | Code | Rarity | Price | Buy |
|---|---|---|---|---|
| Duelist's Advance | DUAD-EN017 | Ultra Rare | $3.34 | |
| Duelist's Advance | DUAD-EN017 | Starlight Rare | $25.22 |
Eidos the Underworld Monarch: FAQ
How much is Eidos the Underworld Monarch worth?+
Eidos the Underworld Monarch currently sells for $3.34 – $25.22 on TCGPlayer, from $3.34 for DUAD-EN017 up to $25.22 for DUAD-EN017. The exact value depends on the printing, rarity, edition and condition — scan the card with YuScan to see the price of your copy.
Which sets was Eidos the Underworld Monarch printed in?+
Eidos the Underworld Monarch appears in 1 set: Duelist's Advance.
Is Eidos the Underworld Monarch legal in tournaments?+
On the current TCG Forbidden & Limited List, Eidos the Underworld Monarch is unlimited (3 copies).
What is the passcode of Eidos the Underworld Monarch?+
The 8-digit passcode printed on Eidos the Underworld Monarch is 31596518.
Monarch
Cards →
Mobius the Frost Monarch
Caius the Shadow Monarch
Raiza the Storm Monarch
Thestalos the Firestorm Monarch
Zaborg the Thunder Monarch
Granmarg the Rock Monarch
The Monarchs Stormforth
Kuraz the Light Monarch
Ehther the Heavenly Monarch
Erebus the Underworld Monarch
Delg the Dark Monarch
Domain of the True Monarchs
What is your collection worth?
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