How does this card’s ＜When Digivolving＞ effect work if my opponent has no Digimon in play?

You can reveal 3 cards, then trash all of them. Note that the effect reads, “you may,” so you can choose whether or not to activate the effect when digivolving, regardless of whether or not your opponent has any Digimon in play. If you choose not to activate it, you don't reveal or trash any cards.

BanchoMamemon rulings (BT8-068)

2 official rulings from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: [When Digivolving] You may Reveal the top 3 cards of your deck. For each of your opponent's Digimon, you may play 1 Digimon card with [Mamemon] in its name and a memory cost of 10 or less among the revealed cards without paying its memory cost. Trash the remaining cards. [All Turns] While you have another Digimon with [Mamemon] in its name in play, this Digimon gains Security A. +1

Official Q&A

How does this card’s ＜When Digivolving＞ effect work if my opponent has no Digimon in play?
You can reveal 3 cards, then trash all of them. Note that the effect reads, “you may,” so you can choose whether or not to activate the effect when digivolving, regardless of whether or not your opponent has any Digimon in play. If you choose not to activate it, you don't reveal or trash any cards.
Ruled Mar 28, 2024
What does “memory cost of 10 or less” refer to?
Play cost.
Ruled Mar 28, 2024

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Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.

BanchoMamemon rulings (BT8-068)

2 official rulings from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: [When Digivolving] You may Reveal the top 3 cards of your deck. For each of your opponent's Digimon, you may play 1 Digimon card with [Mamemon] in its name and a memory cost of 10 or less among the revealed cards without paying its memory cost. Trash the remaining cards. [All Turns] While you have another Digimon with [Mamemon] in its name in play, this Digimon gains Security A. +1

Official Q&A

How does this card’s ＜When Digivolving＞ effect work if my opponent has no Digimon in play?
You can reveal 3 cards, then trash all of them. Note that the effect reads, “you may,” so you can choose whether or not to activate the effect when digivolving, regardless of whether or not your opponent has any Digimon in play. If you choose not to activate it, you don't reveal or trash any cards.
Ruled Mar 28, 2024
What does “memory cost of 10 or less” refer to?
Play cost.
Ruled Mar 28, 2024

Got a line that uses BanchoMamemon? Map it in the builder and share it with a link.