# 2021 Digimon Double Diamond #BT6-108

> Underworld's Call is a Level 4 purple Option card from the 2021 Digimon Card Game Double Diamond set, designed to support strategic discard and security manipulation.

Canonical URL: https://supercatch.com/product/digimon-double-diamond-underworlds-call-bt6-108-r

## Identity

- **Year**: 2021
- **Manufacturer brand**: Digimon
- **Set / series**: Double Diamond
- **Card number**: #BT6-108
- **Product type**: TCG_CARD

## Description

Underworld's Call, identified as BT6-108 in the Double Diamond set, is a strategic Option card released in 2021 for the Digimon Card Game. Printed in purple, this card serves as a versatile tool for players looking to manipulate both their hand size and security checks. The card features a play cost of 4, requiring a moderate investment of memory to activate its dual effects.

The primary ability of Underworld's Call allows players to trash the card from their hand using an effect to draw one card. This mechanism provides consistent card advantage, helping players cycle through their deck to find key pieces. Additionally, the card offers a powerful [Main] effect that lets players play one purple Level 4 or lower Digimon card from the trash without paying its memory cost. This ability is particularly useful for recovering important units that have been discarded or destroyed, enabling rapid board presence without consuming additional memory.

A unique feature of this card is its [Security] ability, which activates the [Main] effect when revealed during a security check. This turns Underworld's Call into a potential trap, rewarding opponents for attacking while providing the defender with a free Digimon play. This duality makes the card a valuable asset in defensive strategies, as it can punish aggressive plays while simultaneously recovering resources.

Collectors of the Digimon Card Game often seek out cards from the Double Diamond series for their unique mechanical interactions and thematic depth. Underworld's Call stands out for its ability to bridge the gap between resource management and board control. Its purple color identity allows it to integrate seamlessly into decks focused on purple Digimon, offering a reliable way to maintain momentum. The card’s design and functionality reflect the evolving complexity of the game, appealing to both competitive players and casual enthusiasts who appreciate strategic depth.

## FAQ

### What is the play cost of Underworld's Call?

The play cost for Underworld's Call is 4 memory. This moderate cost allows players to activate its effects without depleting their resources too early in the game.

### How does the Security effect work on this card?

When Underworld's Call is revealed during a security check, its [Main] effect activates. This allows the player to play one purple Level 4 or lower Digimon from their trash without paying its memory cost.

### What color identity does Underworld's Call belong to?

Underworld's Call belongs to the purple color identity in the Digimon Card Game. This makes it compatible with decks that focus on purple Digimon and effects.

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## Companion files

- [llms.txt](https://supercatch.com/llms.txt) — site-level concise index.
- [llms-full.txt](https://supercatch.com/llms-full.txt) — site-level expanded corpus.
- [ai.txt](https://supercatch.com/ai.txt) — AI training and licensing terms.

Last verified: 2025-11-29.