Can I use this card's [When Digivolving] effect to give "[Start of Your Main Phase] This Digimon attacks" to a Digimon that isn't affected by effects?
Show ruling
You can give that effect to such Digimon, but if the Digimon isn't affected by effects upon the trigger timing, the gained effect won't trigger.
Source: BT23-056 WereGarurumon