Does "For every 10 total cards in both players' trashes" mean for every 10 cards in either me or my opponent's trashes?

No, it means for every 10 cards in the total sum of cards in your trash and the cards in your opponent's trash. For example, if you have 12 cards in your trash and your opponent has 8 cards in their trash, the total would be 20. Therefore, you trash 2 cards from your opponent's security stack.

Gallantmon: Crimson Mode rulings (BT17-018)

1 official ruling from Bandai, last ruled Sep 6, 2024. Straight answers to how this card actually resolves.

Gallantmon: Crimson Mode (BT17-018) card

Effect: [Hand] [Counter] Blast Digivolve [On Play] [When Digivolving] Choose any number of your opponent's Digimon whose total DP adds up to 15000 or less and delete them. [When Attacking] [Once Per Turn] For every 10 cards in both player's trash, trash 1 card from the top of your opponent's security stack.

Official Q&A

Does "For every 10 total cards in both players' trashes" mean for every 10 cards in either me or my opponent's trashes?
No, it means for every 10 cards in the total sum of cards in your trash and the cards in your opponent's trash. For example, if you have 12 cards in your trash and your opponent has 8 cards in their trash, the total would be 20. Therefore, you trash 2 cards from your opponent's security stack.
Ruled Sep 6, 2024

Combos using Gallantmon: Crimson Mode

See these rulings play out in real lines, step by step.

Crimson Raid: Delete, Unsuspend, Strip Security

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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.