Maybe, but I doubt it will get a Mega, as it has to reveal more of the Pokémon (unless it will just grow another two heads) and I don't think they will.
I've played it a couple of times online during the Get Together. Building a deck online isn't very hard, there are sites for that. I started one, but it's not very big yet. I'm going to add more cards later. It's here, but don't click the link if you want to be surprised by its contents while playing.
That is how fishing rods seem to work, so I guess so. (Although Flare's not agreeing to that.)