Install DigiFoundry for a faster, full-screen experience. Install this app — tap Share, then Add to Home Screen.

Artwork variants

3 printings of BT21-040. They are the same card for deck building — any of them fills the slot.

BT21-040 U
BT21-040_P1 U
BT21-040_P2 U

Agumon

BT21-040 Digimon Yellow Red U
Level
Lv.3
Play Cost
3
DP
1,000
Form
Rookie
Attribute
Vaccine
Traits
Dinosaur/Hero
Digivolves From
Lv.2 · Red/Yellow · digimon · Cost 1
Set
BT21

Effect

Digivolve [Koromon]/Lv.2 w/[Hero] trait: Cost 0

Your Turn While your opponent has a level 6 or higher Digimon or you have 3 or more [Hero] trait Tamers with different names, this Digimon may digivolve into [ShineGreymon] in the hand for a digivolution cost of 4, ignoring digivolution requirements.

Inherited Effect

Your Turn This Digimon gets +2000 DP.

Track this card

Record how many copies of BT21-040 you own and DigiFoundry shows which are in decks, which are up for trade and which are actually available.

Start tracking free

Printed In

  • DIGIMON GENERATION [AD-01] Mar 2026
  • WORLD CONVERGENCE [BT-21] Apr 2025
See the full BT21 card list

Rulings for Agumon

Official clarifications published for this card.

I used a DUAL card with the name [ShineGreymon] on its Digimon side as an Option card from my hand. Can I then use Arts Digivolve to digivolve this card into the card I used, ignoring digivolution requirements?

No, you can't. A used Option card is treated as not being in any area until its [Main] effect has been resolved and the card would be trashed. You can't ignore digivolution requirements because it isn't treated as a card in the hand.

8 May 2026

I used a DUAL card with the name [ShineGreymon] on its Digimon side as an Option card from my hand. Can I then use Arts Digivolve to digivolve this card into the card I used, ignoring digivolution requirements?

No, you can't. A used Option card is treated as not being in any area until its [Main] effect has been resolved and the card would be trashed. You can't ignore digivolution requirements because it isn't treated as a card in the hand.

8 May 2026

I used a DUAL card with the name [ShineGreymon] on its Digimon side as an Option card from my hand. Can I then use Arts Digivolve to digivolve this card into the card I used, ignoring digivolution requirements?

No, you can't. A used Option card is treated as not being in any area until its [Main] effect has been resolved and the card would be trashed. You can't ignore digivolution requirements because it isn't treated as a card in the hand.

8 May 2026

More from BT21

Full set list
Agumon BT21-040