# 2023 Magic: The Gathering Magic Online Promos #105876

> The 2023 Magic Online Promos Underground River card (#105876), a dual-color land that adds Colorless, Blue, or Black mana.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-underground-river-105876

## Identity

- **Year**: 2023
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Magic Online Promos
- **Card number**: #105876
- **Product type**: TCG_CARD

## Description

The 2023 Magic Online Promos Underground River card (#105876) is a dual-color land designed to support strategies in Magic: The Gathering. Featuring a mana value of zero, this card allows players to add Colorless, Blue, or Black mana to their resources. As a land card, it plays a crucial role in deck construction, providing the necessary mana to cast spells from multiple color identities. The card’s rules text offers flexibility, enabling players to choose between adding a single Colorless mana, a Blue mana, or a Black mana. However, this choice comes with a trade-off, as the land deals one damage to the player each time it is tapped. This mechanic adds a layer of strategic decision-making, requiring careful management of life total and resource allocation. For collectors of Magic: The Gathering, the Underground River card (#105876) is a valuable addition to any collection. Its dual-color capability and unique mana production make it a sought-after item for both competitive players and casual enthusiasts. The card’s design and mechanics reflect the intricate world-building and gameplay depth that Magic: The Gathering is renowned for. Whether you are looking to enhance your deck or expand your collection, this card offers a compelling combination of utility and collectibility. The Underground River card is a testament to the creativity and complexity that define the game, making it a standout piece for any Magic: The Gathering aficionado.

## FAQ

### What mana types can Underground River produce?

Underground River can produce Colorless, Blue, or Black mana. You choose which type to add when you tap the land for mana.

### What is the mana value of Underground River?

The mana value of Underground River is zero, making it a land card that can be played on the first turn.

### What is the drawback of tapping Underground River?

Each time you tap Underground River for mana, it deals 1 damage to you. You must manage your life total carefully when using this card.

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Last verified: 2025-11-29.