Q1: Can I process the part of the effect after "then" in this card's When Digivolving effect even if the "if" condition in the 1st process isn't met?

Yes, you can process it. Even if this Digimon didn't DNA digivolve, this card's When Digivolving effect deletes all of your opponent's Digimon with the highest level.

Q2: What combinations of digivolution cards can be played by this card's End of Attack effect?

The following combinations are possible. ●1 card with Greymon in its name and 1 card with Garurumon in its name ●1 card with Greymon in its name and 1 card with the Ver.2 trait ●1 card with the Ver.1 trait and 1 card with Garurumon in its name ●1 card with the Ver.1 trait and 1 card with the Ver.2 trait

Q3: At the end of an attack by this card that has 1 card with Greymon in its name and 1 card with Garurumon in its name in its digivolution cards, can I activate this card's End of Attack effect and play just the card with Greymon in its name from this Digimon's digivolution cards?

No, you can't. If this card's End of Attack effect activates, you must play the specified cards whenever possible.

Q4: At the end of an attack by this card that has just 1 card with Greymon in its name in its digivolution cards, can I activate this card's End of Attack effect and play just the card with Greymon in its name from this Digimon's digivolution cards?

Yes, just that card can be played.

Q5: What does "none of your ... Digimon are affected by your opponent's Digimon's effects" mean, exactly?

This effect prevents Digimon from being affected by effects. For example, your Digimon won't suspend if it's chosen for a "suspend 1 of your opponent's Digimon" effect, and its DP won't be reduced by 3000 if it's chosen for a "1 of your opponent's Digimon gets -3000 DP."

Q6: Can a card that has an "isn't affected by ... effects" effect be chosen for an effect?

Yes, it can be chosen. For example, a Digimon that isn't affected by effects can be chosen for a "suspend 1 of your opponent's Digimon" effect.

Q7: Can a card that has an "isn't affected by ... effects" effect be given an effect?

Yes, it can. It won't be affected by it, but it can be given an effect. However, if an effect such as Security Attack is given to a Digimon that isn't affected by effects, the Digimon won't be considered to have that effect.

Q8: If a card is affected by an effect, then it later gains an "isn't affected by ... effects" effect, what happens to the effect that was affecting it?

As soon as it gains the "isn't affected by ... effects" effect, it will no longer be affected.

Q9: If a card has an "isn't affected by ... effects" effect, it gains an effect, then it later loses the "isn't affected by ... effects" effect, what happens to the effect that it gained?

It will be affected by the effect as soon as it can be affected by effects.

Q10: A card that has an "isn't affected by ... effects" effect was given an effect that triggers at a timing such as When Attacking. Will the effect trigger if that card later meets the trigger conditions?

If the Digimon isn't affected by effects upon the trigger timing, the effect won't trigger.