[On Play][When Digivolving] By placing 1 Digimon card with the [X Antibody] or [Royal Knight] trait from your trash as this Digimon's bottom digivolution card, all of your opponent's play cost 10 or higher Digimon can't attack players until the end of their turn.
[All Turns][Once Per Turn] When an effect would remove this Digimon from the battle area, by returning 1 card with the [X Antibody] or [Royal Knight] trait from this Digimon's digivolution cards to the bottom of the deck, prevent that removal.
Rulings Q&A — 2 entries
Q1Q2312
When my opponent activated this card's [On Play][When Digivolving] effect, my Digimon with a play cost of 9 or less digivolved in my next turn and became a Digimon with a play cost of 10 or more. Can I attack with this Digimon?
A Digimon with a play cost of 9 or less attacked a player, digivolved using a [When Attacking] effect, and became a Digimon with a play cost of 10 or more in a state where this card's [On Play][When Digivolving] effect was activated for my opponent. What happens to the attack in such cases?
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Official Ruling
The attack has already been declared, so the attack will continue.
