Artwork variants
3 printings of BT21-010. They are the same card for deck building — any of them fills the slot.
Gammamon
- Level
- Lv.3
- Play Cost
- 3
- DP
- 1,000
- Form
- Rookie
- Attribute
- Virus
- Traits
- Ceratopsian/Hero
- Digivolves From
- Lv.2 · Purple/Red · digimon · Cost 1
- Set
- BT21
Effect
Digivolve [Gurimon]/Lv.2 w/[Hero] trait: Cost 0
Your Turn While you have 2 or fewer security cards or 3 or more [Hero] trait Tamers with different names, this Digimon may digivolve into [Siriusmon] 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 BT21-010 you own and DigiFoundry shows which are in decks, which are up for trade and which are actually available.
Printed In
- DIGIMON GENERATION [AD-01] Mar 2026
- WORLD CONVERGENCE [BT-21] Apr 2025
Rulings for Gammamon
Official clarifications published for this card.
I have 2 or fewer security cards or 3 or more [Hero] trait Tamers with different names. Can I activate this card's [Your Turn] effect at the same time as an effect such as P-103 [Offense Training]'s effect that digivolves?
Yes, you can.
3 October 2025
I have 2 or fewer security cards or 3 or more [Hero] trait Tamers with different names. Can I activate this card's [Your Turn] effect at the same time as an effect such as P-103 [Offense Training]'s effect that digivolves?
Yes, you can.
3 October 2025
I have 2 or fewer security cards or 3 or more [Hero] trait Tamers with different names. Can I activate this card's [Your Turn] effect at the same time as an effect such as P-103 [Offense Training]'s effect that digivolves?
Yes, you can.
3 October 2025
