This card's inherited effect and BT21-064 [Guilmon]'s inherited effect triggered simultaneously when BT21-068 [Growlmon] with this card and BT21-064 [Guilmon] in its digivolution cards was deleted. At such times, if I activate this card's effect first and BT21-068 [Growlmon] is returned from the trash to the hand, can I then activate BT21-064 [Guilmon]'s inherited effect?
Show ruling
No, you can't activate it. When a Digimon is deleted and an [On Deletion] effect on a digivolution card is triggered, it will only be pending activation for the Digimon card with that digivolution card. If a card with an effect that's pending activation leaves that area before the effect activates, the effect can no longer be activated. In this case, if BT21-068 [Growlmon] is deleted and an [On Deletion] effect on a digivolution card is triggered, the effect will only be pending activation for BT21-068 [Growlmon]. If the deleted BT21-068 [Growlmon] leaves the trash, the inherited [On Deletion] effect that was pending activation can no longer be activated.
Source: P-177 Gigimon