Right then, lets have a look see:
Vileplume - Obvious potential for a troll card. Has good synergy with Giratina-EX to lock off 4/7 card types. GPF makes turn 1 possible, but probably not ideal. We'll have to see what decks arise from AOR to see if Vileplume is truly relevant.
Bellossom - Flower Mixer is interesting. Typically, this kind of effect is better for abilities. However, 60 damage is a solid hit, and this might prove valuable in M Venusaur decks that might see play post AOR. Also, beautiful art
Ariados - Obvious synergy with Grass decks, as well as Machamp EX. Expect to see this card in decks from place for years to come.
Sceptile EX - Not much special. 130 Damage with a Special Condition on the opponent is not that useful, potential to hit for 170 cumulative with Muscle Band and 2 rounds of Poison damage.. 1 Energy for 10, even with the ability, is bloody awful. If it was colourless I could maybe understand.
M Sceptile EX - Now this card is fascinating. I can see fire type making a resurgence in the meta with this card around. The effect is great early game to accelerate cheaply (Energy retrieval making a lot more sense now huh?) while taking some damage off late game. Theta Stop obviously has utility, but I'm still struggling to think of cards that aren't rotating that will really affect this. A trait for the sets to come, I guess.
Vespiquen - As many others have said, we've got a new tiered deck right here. As we'll talk about later, the potential of Vespiquen and friends is huge. 90HP attacker does annoyingly put it into the PRC Medicham camp of weakness, but double colourless is a bit more flexible and Teammates is always amazing with Comp. Search rotating. Expect big things of this card.
Vespiquen AT - Bad compared to the regular card. Still, amazing art. ATs in this set are the most beautiful ATs we've yet seen. Let's hope they keep this style.
Virizion - Funny, when this was announced everyone was hailing it as the death of Toad. Looks like TPCi got there before them. Nothing special, Sacred Ash/Revive is superior to the first attack, and prize counter is niche at best. If PGroudon wasn't already over with the other cards in this set I'd maybe suggest it as a counter to that. In reality, this new meta is the counter to Groudon.
Flareon - Flare Effect. What else needs to be said. The potential for these three Eeveelutions are huge, and their implications on the meta will be felt until they rotate in two years time. The attack is nothing special, however. 3 for 70 on average is poor overall.
Entei - Burning Scent is bad with LTC gone, period. Combat Blaze is interesting. My first thought was potential Shiftry FLF/Raichu and friends counter for fire decks
Entei AT - Nothing really special, 4 energy is super steep (although manageable with Fire type's energy acceleration potential). Beautiful card thought.
Volcarona - This card interests me the most out of any card in this set. Sunbath could do some amazing things. There are cards that have really slow acceleration and 3 attack cost. Boom, Sunbath and attach next turn for an attack. There are cards that have awkward attack costs. Boom, Sunbath and get exactly the energy types you need. I really want to make this card viable. Magmarupt might like this card a lot. Other than that, 60 for 2 with a discard is nothing special.
Volcarona AT - Stunning card, but poor attacks.
Magikarp - 10/10 BCIF
Gyarados - This is the card Wide Lens was born for. Being stage 1 means the Eeveelutions add their types. The potential spread becomes pretty huge. Aqua Tail is also a pretty fun troll attack, and will probably decide games at prereleases.
Gyarados AT - Archie's Gyarados anyone? 4 Magikarp with 20 damage each = 240 damage. Bats will laugh in its face though.
Vaporeon - Aqua Effect. Once more, amazing ability, average attack
Relicanth - Gotta love filler. Deep Sea Search is splashable, but it pretty much becomes trading a prize for two Pokemon. You'd have better luck with teammates.
Regice - Very strong in anti-EX decks. 120 HP is not as good as 130, but Resistance Blizzard could win some matches.
Kyurem-EX - Hahahahahahahaha
Jolteon - Same as Flareon and Vaporeon
Ampharos EX: Sparking Tail is a nice anti-safeguard measure, and this + Shrine of Memories is M Ampharos' Answer to Giratina-EX. Thunder Rod is just bad though.
M Ampharos-EX - If this card works properly, expect some rage quits. This fits perfectly as a disruption based deck, prevent your opponent from attack while preventing any efforts to retreat/attack. I'm sure many will try to make this deck work.
Rotom - Boring. That's it. Mischievous Light 'might' have been interesting with Trick Coin if it discarded cards from your opponents. Shuffling them back into the deck is pretty worthless though.
Unown - Interesting card, could be used to put energy in the discard if you have no other means, or used as bench management.
Baltoy AT - Just. Why? You give a card some pretty beautiful art then make it the most boring card to ever exist.
Claydol - The potential for trolling is strong. Not much preventing you from just putting the evolutions back on (this will even help Theta Max Pokemon) but I'm sure someone will make a Rogue from it.
Golurk - Shame, really, but Vespiquen really stole this cards thunder. I'll still make a deck with it and Eevee just for fun, but arguably worse than a Vespiquen deck due to Grass weakness being more prevalent than Fight and Psychic combined, and Vespi only needs 2 energy while the 'Lurk needs three. Incredible art though.
Hoopa EX: Staple. Focused search is great in a post LTC meta. Attack is pure trash though. Pretty bad Lysandre bait.
Machamp EX - This card could be fun. Combine with Heavy Boots and Ariados AOR and you've got either 160 Damage (+ Strong Energy + Muscle Band + Fighting Stadium etc etc) or potential for a strong Thrash with no drawback. Heavy Boots will put you at 200HP as well, a fairly nice number to hit.
Quagsire - Not quite sure why this card exists, but 80 for three is good for prereleases
Regirock – Can hit hard, but Hawlucha is arguably better in most regards for Fighting anti-EX.
Golurk – Pails in comparison to it's AT brother
Tyranitar EX – Garbage card, only there to feed its mega.
M Tyranitar EX – Now this card could be a lot of fun. Destroyer King is insanely powerful, Colour Drained City may hurt you but it'll put every EX in the game into KO range with a Muscle Band attached. Bats will also be lethal with this card. The only concern is 4 energy cost, DDCC is nicer than DDDC.
Sableye – Captivating Eye might make an interesting mill deck when combined with Professor Juniper. We'll have to see. Juniper does give your opponent a nice big hand with which to comeback with.
Malamar – Poor. Let's move on
Metagross – Free Escape Rope per turn? Eh. Iron Cannon is pretty much Full Metal Impact but with the annoyance of being a Stage 2. Someone will make a Rogue Metal deck with level ball though for sure.
Metagross AT – Machine Gun Stamp could be fun with two Muscle Bands. You need 5 cards in hand for it to better than Guard Press. Love the art though. Here's hoping for a regular Metagross EX at some point as well (that isn't an expensive promo).
Registeel – I like Imprisoning Hammer, could become a tech that decides matches with Steel decks.
Gardevoir – Bold and brash? More like belongs in the trash. Meh tastic is how I'd describe it. Maybe someone will prove me wrong.
Whimsicott – A very nice card. Put this in an M Gard deck, then use M Gards bulk to turn Whimsicott into a free two prizes. If this made finals of something the hype when it got the KO with Wind Mischief would be unreal.
Giratina-EX – Oh god, here we go. This + Vileplume could lead to some rage quits worse than Sesimitoad. I therefore must make a deck with 4 in.
Goomy – Mo Goomy = Mo Goomy
Goodra – Nothing special. 80 snipe for two will be rare but good for the cost.
Persion – Filler
Eevee – Coulda just skipped Eevee in this set TBH, Energy Evolution Eevee will always be used over this.
Porygon – Alph Glyph reborn. BCIF # 2
Porygon Z – Cyber Crash would ruin Giratina EX's day. Slow beam is also great, hitting for 90 with Muscle Band and preventing your opponent from 'hopefully' attacking. Combo this with Head Ringer and you've got some troll potential.
Porygon Z AT – Digitial Reboot. The bats, oh lord the bats. Screen Resolution is eh.
Lugia EX: Have I mentioned how much I love Aero Ball? Deep Hurricane is also pretty strong, but having Jolteon AOR in format makes that Weakness a massive liability.
Eco Arm – Eh. Could see play with M Ttar to help with potential Double Head Ringers.
Paint Roller – Can see a lot of decks running 1 or 2 of these. Little bit of draw and removes stadiums, great for countering a lot of deck strategies.
Level Ball – Sadly no Heavy Ball. However, this will shake up stage 2's massively. Can't wait to see the intersting concepts coming back with this card.
Lucky Helmet – Not sure. There are a lot better tools.
Spirit Links – Ampharos is beautiful. Otherwise, average.
Ace Trainer – Most decks will probably run 1 of. Decks that expect to go down in prizes will run at least 2.
Hex Maniac – With some of the abilities introduced in this set, I can see this being a 2 of staple in most every deck if the meta goes the way I think it will.
Color-Drained City – Good with Ttar and anti Mega decks, otherwise eh.
GPF – Potentially format breaking. Remains to be seen.
Flash Energy – Good with Jolteon AOR, but still weak to Enhanced Hammer and no way to bring it back reliably.
Bad Energy – Potentially interesting, will have to see which decks make use of this. Ttar, maybe.
And finally, some aesthetic opinions
Sceptile – 6/10
M Sceptile – 7/10
Kyurem – 9/10
Ampharos – 7/10
M Ampharos – 10/10
Hoopa – 100000000000000000000000000000/10
Machamp – 9/10
Ttar – 9/10
M Ttar – 8/10
Giratina – 6/10
Lugia – 8/10
Long post, sorry.