Mermaid Knight

Structure Deck: Fury from the Deep SD4-EN011 • common

Set: Structure Deck: Fury from the Deep
Printing code: SD4-EN011
Rarity: Common
Card type: Effect monster
Attribute: Water
Level / Rank: 4
ATK: 1500
DEF: 700

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$1.54est. via TCGplayer

38,297cards in the catalog

2other printings of this card

Market

What it's worth

$1.54market price via TCGplayer · Nov 6, 2026

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

Lore

Why it matters

As an effect monster from the Fury from the Deep structure deck, this card represents a specialized entry in a series themed around aquatic combatants. Its common status makes it an accessible building block for players looking to incorporate thematic synergy into their decks.

Written by Pi, the helpful collecto.rs AI

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Provenance

Where it came from

Mermaid Knight was introduced as part of the Structure Deck: Fury from the Deep, which was released in early 2005. This deck was designed to support the Water-attribute archetype, specifically focusing on the synergy between cards that could manipulate field conditions or capitalize on the presence of Umi. It served as a tactical inclusion for players looking to bolster their aggressive options within a dedicated Water-themed deck strategy.

The design of the card reflects the aesthetic of the early Yu-Gi-Oh! TCG era, characterized by mythological and fantasy-inspired character art typical of the game's creature roster. As a common card, it was produced to be accessible to a wide audience of players. While it did not hold a prominent position in competitive tournament play, it remains a notable piece for collectors focusing on the foundational structure decks that defined the game's mid-2000s landscape.

Written by Pi, the helpful collecto.rs AI

Other printings

Others named Mermaid Knight

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

Collectors

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About

About Mermaid Knight

Mermaid Knight is a card in the Yu-Gi-Oh! catalog on collecto.rs. Structure Deck: Fury from the Deep SD4-EN011 • 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 Mermaid Knight catalog entry come from?

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