if blaziken ex is banned... these cards should have a decent impact on the metagame:
TA's Lanturn. Pure speed right here, the power is 0wnage imo. We'll see how it works, though I can see it being abused with archie. The attack isn't great, but u can power it up while powering somethign else up. What wins in modified? Energy manipulation. Lanturn has just this.
Same goes for TM's Camerupt btw.
Sceptile ex. Wow, what a BEAST! Especially with energy trans sceptile, I think this can work big. I think that if its fast enough (boost nrg comes to mind) this could really be competitive, even against BAR, as it ohko's rayquazza w/o a shard, and blaziken only dealts it 100 dmg. The same u can deal it. Just pack in some switch/warp energies/free retreaters, and go to work.
Swampert is going to get popular I think with all the new water stuff, which allows Swampy ex to get some play as a counter to its weaknesses. Very nice card too, only 1 weakness is great ^_^
Kyogre/Groudon... hmm, I think Groudon could see some play, and Kyogre can benefit nicely from swampert, so we'll see how they go. I really do like them both, but I dunno how they'll fair.
Of course, the new trainers are very very good, most of them will see use.
All of this depends on whether or not blaziken ex is banned though, if its not banned, then all these decks simply lose, lol.