Can I use this card's effect to give this Digimon <Blocker>?
Yes, you can.
Mar. 28, 2024
I use this card to give a Digimon <Blocker>. If that Digimon digivolves into a different Digimon, what happens to <Blocker>?
Digimon retain effects when digivolving or de-digivolving, so <Blocker> remains.
Mar. 28, 2024