The new Grovyle is fun, but Sceptile-GX is pretty tame compared to something like Shiftry-GX. I’d just use CST Sceptile with Grovyle, at least that’s immune to Beast Box and can deal more damage with good acceleration.
Mina sucks, regardless. Yes it searches your deck for a {Y} Energy, but that’s still just a single {Y} Energy. If it accelerated more than 1, maybe, but it’s useless by just accelerating 1. Not even something like Gardevoir-GX could use it, since again, it’s only 1 Energy.
Ribombee’s Ability is nice, but it should have been on a basic Fairy, this is a low HP Stage 1 that can’t attack.
So far, the only new cards I like are Net Ball (for VikaBulu and Genesect), Mimikyu-GX, and Xerneas Prism Star. Everything else is kind of just... not really that much of a Fairy buff.