Ancient Brain

Speed Duel: Trials of the Kingdom SBTK-EN004 • common

Set: Speed Duel: Trials of the Kingdom
Printing code: SBTK-EN004
Rarity: Common
Card type: Normal monster
Attribute: Dark
Level / Rank: 3
ATK: 1000
DEF: 700

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$1.08est. via TCGplayer

38,297cards in the catalog

3other printings of this card

Market

What it's worth

$1.08market price via TCGplayer · Nov 6, 2026

Estimate for a typical copy of Ancient Brain; condition, printing, and grading move the real number.

Lore

Why it matters

As a normal-monster card from the Speed Duel series, Ancient Brain functions as a fundamental piece of a deck, offering straightforward utility that helps players maintain board presence. While its common rarity makes it widely accessible, its role in this specific collection set highlights the classic gameplay mechanics that define the experience of head-to-head card battling.

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Provenance

Where it came from

Ancient Brain was originally introduced to the Yu-Gi-Oh! trading card game during the classic era of the hobby, appearing in early supplemental sets. As a level three fiend-type normal monster, its design leans into the thematic aesthetic of the game's initial card pool, which frequently drew inspiration from gothic horror and fantasy illustrations to populate the lower tiers of competitive play.

The Speed Duel: Trials of the Kingdom set, which includes the SBTK-EN004 printing, was released to support the Speed Duel format—a streamlined version of the game designed for quicker matches and simplified board states. By re-releasing cards like Ancient Brain in this format, Konami provided players with accessible, nostalgic pieces that fit the specific card pools required for balanced, smaller-deck gameplay.

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Other printings

Others named Ancient Brain

Same name, different printings and different cards — these sources have no shared id tying a reprint to its original.

Collectors

Who's collecting this

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About

About Ancient Brain

Ancient Brain is a card in the Yu-Gi-Oh! catalog on collecto.rs. Speed Duel: Trials of the Kingdom SBTK-EN004 • common. Catalog data is sourced from YGOProDeck. No collectors on collecto.rs publicly track this card yet — adding yours would make you the first.

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Where does the Ancient Brain catalog entry come from?

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