# 2013 Magic: The Gathering Magic Online Promos #43624

> Underground Sea is a foil Rare card from the Magic Online Promos set (code PRM). It is a Land — Island Swamp with a mana value of 0 and color identity of B, U. The card features normal layout and was illustrated by Cliff Childs.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-underground-sea-43624-foil-promo

## Identity

- **Year**: 2013
- **Brand**: Magic: The Gathering
- **Set**: Magic Online Promos
- **Card Number**: 43624
- **Featured**: Underground Sea
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Type**: Land — Island Swamp
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

Underground Sea is a Magic: The Gathering trading card game card. It is a Rare foil card from the Magic Online Promos set. The card type is Land — Island Swamp with subtypes Island and Swamp. It has a mana value of 0 and a color identity of B, U. The layout is normal. The artist is Cliff Childs. The card number is 43624. It is a promo card.

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Editorial content updated: 2026-10-11.

Site deployment: 2025-11-29.