This card has 3 cards in its digivolution cards, and I have 6 cards in my trash. If this card is deleted and its [On Deletion] effect triggers, is the "if you have 10 or more cards in your trash" condition met, allowing me to activate this effect?
Show ruling
Yes, it can be activated. This card and its digivolution cards are placed in the trash at the same time as deletion, and the [When Digivolving] effect will be pending activation. If you have 10 cards in your trash once those cards are placed, this effect can be activated.
Source: EX10-050 Baalmon