A [Trash] effect can be triggered/activated while its card is in the trash. Such effects can't be triggered or activated in areas other than the trash.
When one of my Digimon digivolves into [Belphemon (X Antibody)], in what order can I activate this card's {Trash} [Your Turn] effect and the effects that trigger upon digivolution into that Digimon?
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Official Ruling
The effects trigger simultaneously, so the player can choose the activation order.
