I see quite a few playable cards.
Cradilly: Already been talked about to death, but it gives stage 2s something.
This was just a stroke of brilliance on the part of whoever made it. "They said Stage 2s were inconsistent and therefore bad...so we gave Stage 2s support in the form of the only thing less consistent than them!"
Tropius: Decent counter to Keldeo (assuming that's still a thing) and a good draw engine.
No, it isn't. Keldeo needs 4 energy on it to get KOed, it fires KOs right back, and by then most Keldeo will just be used for the ability. The first attack has been seen on numerous Pokemon over time, none of which have been used. Tornadobro-T's first attack is also imo better and for colorless. Speaking of not Colorless, any deck using Grass energy can use Genesect and have no problem with Keldeo anyway.
Virizion EX: Built in acceleration from the deck and protection from lasers.
Genesect EX: Built in catcher and a strong, drawback free attack. (not to mention the ace specs)
Eelektross: Amazing with dynamotor. Can be a nasty finisher if you have the energy.
Because why have Rayquaza do 80 damage per energy when you can have a stage 2 doing 30 per energy?
Drifblim: Can basically attack for free if you're facing a plasma deck. And the attack is actually decent.
Except decent is not good, and its a stage 1.
Sigilyph: Load it up with rocky helmets, giant capes, and eviolites to make it a real pain to KO.
With the damage cap of most decks out there killing this thing is not a problem, its attack is terrible, and you're wasting a ton of cards on one thing that's not even turning you a benefit.
Sawk: Can do 50 for C if you're up against plasma.
50 damage turn 1 is nothing to write home about with Landorus EX and all the trainer energy accel, and this thing is horrible every other turn, and you can't even decide whether its going to be 50 or 10 regardless of your hand.
Jirachi EX: Level ball --> this --> skyla --> any trainer you need.
Dialga EX: Good with colress machine. Potential first turn 90 with additional mill.
Mill is not useful at all turn 1 in a deck that does not mill as a win condition (see: Durant) so this is inferior to Lugia in terms of doing stuff t1 with double Colress DCE.
Haxorus: Instantly kills plasma and can do a lot of damage with dragon ax.
Except that its a stage 2 and therefore easily killed, and is also a ton of wasted space against any deck not running many/any Plasma mons because the first attack requires you to put 5 energy of a type that has no acceleration on a stage 2 with a dragon weakness. See where this is going?
Porygon Z: Anything that moves energy around has some potential.
Hydreigon is dead now and Klinklang BW is pretty much dead too, its used as a 1 of tech and will surely die if the other Klinklang stops being good. To top it off, Porygon-Z is so much worse than them. He can only move a Colorless Special Energy-meaning you have only 4 energy max that can be moved, no Max Potion schenanigans except on like Mewtwo and Tornadus, etc. etc.
All of the tool cards are good, especially the anti EX one.
I hope you're not counting G-Scope because that thing wouldn't be good if it wasn't an Ace Spec. Which it is.
Iris is amazing late game.
Except that it really isn't. Maybe Darkrai will run 1 or 2 to get an OHKO on an EX late game or an 180 hp EX earlier, but that's it and I'm not sure Darkrai will still be a thing when this is out. The rest of the decks hit 180 easily enough that they don't need this. In addition, this just clogs your hand really badly early and cannot be run in anything with Random Receivers.
Caitlin helps with fossils and plasma energy.
If you think this is a better supporter than Cheren, Bianca, N, and Juniper, I'm done arguing with you.
Scoop up cyclone: Good with Blastoise/Keldeo
Kyurem EX: 180HP basic with an outrage attack, need I say more?
Yes. You do. 180 hp is not very difficult to hit any more and definitely won't be any harder when this comes out, and the decks that can't hit 180 in one turn can just ignore it or hit it with a weak attack first. Have you noticed that nothing with Outrage is good any more?
Suicine: Sigilyph sees play so I don't see why this wouldn't.
Well, Sigilyph hit something good for weakness (Mewtwo) while this hits nothing. Also, Sigilyph does more damage, is level ball searchable, and more decks that do not rely on EXes will be out by the time Suicune is.
I don't think we have anything broken, but we do get some playable cards.