So with regards to
M Salamence-EX and
Karen, shock of shocks: I have opinions! Hopefully they will be a little more, and include some analysis and reasoning to justify any speculation. The short version is that neither card is as good as is generally being said in the comments.
1)
M Salamence-EX reminds me a lot of the many Mega Evolutions that maybe, kind of, sort of were played and then died out. It can bring the damage but needs too much setup in order to do so, and/or there will most likely be another similar card that ultimately works better to fill the role anyway.
2)
Karen of course is
too good; it probably won't be a significant problem (unlike its predecessor
Lysandre's Trump Card), but that doesn't mean it is well balanced. I notice how the decks that seems boring but fair* to face has a lot of people hating on it, but I've never heard a good reason
why. It isn't dominating Expanded. It was dominating Standard as of the State Championships, but it is hard to tell how much of that is is being, effectively, a budget deck and thus run that much more frequently. I would have much rather had a Supporter based counter for Item lock than for a glass cannon beatdown deck that usually just requires running some decent, non-Pokémon-EX and/or making sure to take out the opponent's
Shaymin-EX to avoid getting behind in the Prize count.
*Compared to most of the competitive metagame, a race to take OHKOs against stuff that can easily be OHKO'd is much more fair than a race to take OHKOs against something difficult to OHKO, or against decks that lock down a major part of your deck ASAP (possibly while still doing the OHKO thing).
@Rocket The Shellos Lysandre requires you use your Supporter to force an opponent's Benched Pokémon of your choice into the Active position. Your
Supporter. If that seems abusively strong, then I think you're looking at the wrong parts of your example.
@crystal_pidgeot and I have discussed this kind of thing
a lot. We often don't agree, but sometimes we do.
We've got attackers that start swinging as soon as they are able; it would be the overall first turn of the game if they hadn't revised the first turn rules to prevent attacks! We've got
Shaymin-EX (and a few others) so you can still have a big "draw" turn but pull off the
Lysandre. We have
VS Seeker so a deck can run one or two
Lysandre but use them over and over again. Lastly we have Evolving Basic Pokémon, Stage 1 Pokémon, and Restored Pokémon that are either too small and/or exist only to Evolve (so when they get KOed before it is a total loss).
Lysandre isn't the problem; remove
Lysandre and we just go back to
Pokémon Catcher and hoping for "heads", with Item lock decks becoming even stronger. We've had the format where Bench sitters were almost invulnerable; it wasn't fun.
Karen will punish Night March, maybe hurt a few decks that benefited from their already strong match up versus Night March, and will otherwise not bother or improve already existing strong decks. Possibly may make a cheap late game
N to one or two cards even more effective if
Karen was used the turn before. Yay. ¬_¬