Well to be fair, the "base" set for each new generation is always a bit vanilla. Overall though mixed opinions, some seem pretty one sided (Red Card for example is usually seen more like a Supporter effect, forcing just your opponent to shuffle is a bit rough), Muscle Band and Hard Charm are better versions of PlusPower and Defender in Tool form (not to mention they don't have restrictions so EXs can use them >.>), etc. Evolution(ary) Soda seems to be the most powerful, it seems at face value like the one stadium several years back that allowed you to basically evolve, then evolve with the stadium's effect. Though I guess depending on how they rule its wording (the part about it counting as evolving), it might not be that great if you can't evolve, then Soda to a Stage 2 or Soda to a Stage 1, then play a Stage 2 from your hand. None of the Megas seem too broken at this point, but M Venusaur is basically unattackable once it hits you unless you have a Switch or Escape Rope handy, and M Blastoise is just a stronger version of Darkrai's attack that hits an extra Pokemon. And of course, some seem completely pointless like Emolga EX...why did it get made into an EX for? Its attacks aren't even good.