Can I activate this card’s [When Digivolving][Main] effect both for a digivolution into this card and for the main phase in the same turn?
No, you can't. This effect is a [Once Per Turn] effect, therefore it can't activate again during the same turn that it activated for [When Digivolving], even if the timings are different.
Mar. 28, 2024
When I use this card’s [When Digivolving][Main] effect to play a card with the [Royal Knight] trait, can I activate both this card's effect and my [BT13-007 King Drasil_7D6]'s effect to reduce the play cost according to each respective effect?
Yes, you can.
Mar. 28, 2024
When I play a card with the [Royal Knight] trait or a green Digimon card, does this card's [All Turns] effect also give <Blocker> to that played Digimon?
Yes, it does. Note that this effect applies to ""all of your Digimon with the [Royal Knight] trait and all your green Digimon,"" therefore any applicable Digimon that are placed in the battle area after this effect activates will also receive <Blocker>.
Mar. 28, 2024