# 2025 Digimon WORLD CONVERGENCE [BT-21] #BT21-004

> This catalog entry covers the Koromon card (BT21-004) from the 2025 Digimon Card Game WORLD CONVERGENCE BT-21 set, designed for collectors building diverse TCG libraries.

Canonical URL: https://supercatch.com/product/digimon-world-convergence-bt-21-koromon-bt21-004-c

## Identity

- **Year**: 2025
- **Manufacturer brand**: Digimon
- **Set / series**: WORLD CONVERGENCE [BT-21]
- **Card number**: #BT21-004
- **Product type**: TCG_CARD

## Description

At the heart of this collection is the Koromon card, cataloged as BT21-004, which serves as a foundational piece for players and collectors alike. As a Level 2 Digi-Egg, Koromon represents the In-Training stage of the Digimon life cycle, appealing to fans who appreciate the early evolution phases of their favorite digital monsters. For collectors of the Digimon Card Game, this card is notable for its specific attributes within the BT21 set. It is classified with a Common (C) rarity, making it an accessible addition to any growing collection. The card features the Yellow color identity, a key factor for players utilizing color-specific strategies. Furthermore, Koromon carries both the Lesser and Hero types, allowing it to integrate flexibly into various deck architectures that rely on these specific classifications. The gameplay utility of BT21-004 Koromon centers on its inherited effect, which activates during the player's turn. When a Yellow or Red Tamer card is suspended, this Digi-Egg allows the player to draw one card. This mechanism supports resource management and card advantage, making it a functional component in decks built around Yellow or Red Tamer units. The card's design and rules text reflect the thematic crossover elements that define the WORLD CONVERGENCE BT-21 expansion. Whether you are completing a set of BT-21 cards or exploring new strategic possibilities, BT21-004 offers a distinct identity within the 2025 release. Its combination of character recognition, specific type tags, and practical gameplay effect makes it a relevant item for serious TCG collectors and casual fans of the franchise. ## Sources

## FAQ

### What type of card is Koromon BT21-004?

Koromon is a Level 2 Digi-Egg card in the Digimon Card Game. It carries the In-Training form designation and is categorized under both the Lesser and Hero types.

### How does the BT21-004 Koromon card effect work?

This card has an inherited effect that activates during your turn. When you suspend a Yellow or Red Tamer card, you may draw one card from your deck.

### What set is the Koromon BT21-004 card from?

The Koromon card with the number BT21-004 is part of the WORLD CONVERGENCE BT-21 set, released in 2025 for the Digimon Card Game.

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- [llms-full.txt](https://supercatch.com/llms-full.txt) — site-level expanded corpus.
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Last verified: 2025-11-29.