# 2026 Yu-Gi-Oh! Magnificent Monsters #MAMO-EN055

> Poseidra, the Storming Atlantean is a WATER attribute Sea Serpent Effect Monster from the Yu-Gi-Oh! trading card game. Part of the Magnificent Monsters set (code MAMO), this card is numbered MAMO-EN055. It is a Level 7 monster with 2800 ATK and 1600 DEF. The card belongs to the Atlantean archetype and features an Ultra Rare Holo finish.

Canonical URL: https://supercatch.com/product/yu-gi-oh-magnificent-monsters-poseidra-the-storming-atlantean-mamo-en055-ultra-rare

## Identity

- **Year**: 2026
- **Brand**: Yu-Gi-Oh!
- **Set**: Magnificent Monsters
- **Card Number**: MAMO-EN055
- **Featured**: Poseidra, the Storming Atlantean
- **Game**: Yu-Gi-Oh!
- **Rarity**: Ultra Rare
- **Attribute**: Water
- **Monster type**: Sea Serpent
- **Level**: 7
- **ATK / DEF**: 2800 / 1600
- **Archetype**: Atlantean
- **Language**: English
- **Material**: Card Stock
- **Finish**: Holo

## Description

Poseidra, the Storming Atlantean is a Yu-Gi-Oh! trading card game card. It is an Effect Monster of the Sea Serpent type with the WATER attribute. This Level 7 monster has 2800 ATK and 1600 DEF. It is part of the Atlantean archetype. The card is from the Magnificent Monsters set, identified by the set code MAMO and card number MAMO-EN055. It has an Ultra Rare Holo finish.

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Editorial content updated: 2026-10-11.

Site deployment: 2025-11-29.