While I cannot see the future, I am more than familiar with the past. A few players have brought up
Weezing (
HeartGold/SoulSilver 34/123;
Call of Legends 38/95). I have not run this card. In formats past, including multiple that featured the previous generation of Pokemon ex, my primary deck was Liability, built around this
Weezing (
EX Deoxys 51/107).
If I go into too much detail, I'll lose people. In short, while not a World Championship deck Liability had its adherents and one went undefeated at the Grinder (exactly which I don't remember, EX Deoxys stayed legal for two or three formats). If it wasn't a top deck, it was still a solid one to look out for. How it worked was simple: have
Weezing use Liability and drop the defending Pokemon to 10 HP. Yeah
Weezing was gone and your opponent took a Prize, but if you were running the deck properly, between turns something finished off the Defending Pokemon. There were various cards that would do that in the format (some Stage 2 Pokemon with Poke-Bodies, some Stadiums). In the end you traded a Stage 1 with an Energy for whatever was most valuable to your opponent.
The current
Weezing last printed in
Call of Legends is
not the Liability
Weezing. Liability required just :colorless: to use, and for :grass::colorless: (which a single
Double Rainbow Energy (
multiple printings)- still legal at the time - could provide) enabled the most excellent Smogscreen attack. Super Poison Breath is a poor replacement, just Poisoning for
sychic: and offering no protection. There is no
Pow! Hand Extension (
EX Team Rocket Returns 85/109) to allow a clever
Weezing player to manipulate the Prize count so that said player enjoys a
Gust of Wind while that player's opponent does not; instead both players will have access to
Pokemon Catcher.
The current
Weezing does have some strengths the old one did not have. At least for the purpose of taking out
Mewtwo EX, the typing is of course better, but that might backfire for other Pokemon so I won't count that. The HP is
not an advantage, since it has just been adjusted for power creep: 90 now is in fact probably no better or even less safe than 70 HP back then. Super Explosion does not place damage counters, but does actual damage. The bad news is that blocking damage counter placement is much harder than blocking damage, but the good news is that increasing damage done is much easier than adding extra counters. Of course, it also does a flat 90 damage, not automatically lowering HP to 10. If it did more damage, then I'd favor the flat doing of damage.
Still 90 is not nothing. Here is where I it becomes apparent I am not writing off the current
Weezing yet.
Weezing decks will be designed to abuse cards like
N (established by how the old
Weezing used
Rocket's Admin.). The old
Weezing didn't have
Twins or
Black Belt or
Defender or
PlusPower (and couldn't have made use of
Black Belt or
PlusPower for Liability anyway). I am wondering if
Kingdra Prime would be helpful.
I'd still say major pieces are missing from the equation, but this shows promise.
Mewtwo EX without
Eviolite will be a sitting duck for a OHKO, even if that OHKO requires a Stage 1 and
Double Colorless Energy. If
Mewtwo EX rushes for an early Prize, it sets up for
Twins, which makes it likely that
Weezing will be there to score a "revenge" KO. If
Mewtwo EX doesn't push for an early Prize... that just gives a deck built around
Weezing time to set-up.
What about the fact that
Mewtwo EX will almost certainly have
Eviolite? Well
Weezing has plenty of options as well.
Eviolite doesn't stack, but unless
Mewtwo EX is backed by
Vileplume, the
Weezing player's deck will likely be designed so that
Weezing is backed by one
PlusPower and one
Defender. Super Explosion doesn't apply Weakness to the damage
Weezing does to itself, but
PlusPower now does apply before Weakness and Resistance. So the net result of the combo is even a
Mewtwo with
Eviolite is OHKOed, while
Weezing hangs on with 10 HP to absorb another attack. If your opponent uses
Pokemon Catcher to bypass
Weezing and go for a more important target... you get to blow
Weezing up again! For those who point out it takes a lot of cards to do this... yes it does. This is how to run
Weezing in its own deck, not as a minor splash in another deck. Still, even without
Defender you take down
Mewtwo EX: if
Mewtwo EX has
Eviolite, it is only fair to assume
Weezing will have
PlusPower or maybe even
Black Belt.
The real concern is how a
Weezing focused deck handles everything else. Without exploiting Weakness, that 90 damage is pretty poor... but not useless. This is part of what I meant by "missing piece" of the combo. Maybe
Weezing will blow itself up for
Gothetelle decks, delivering solid damage while "getting out of the way". Maybe with access to
Twins and
Black Belt, Super Explosion will be adequate. You're losing a Stage 1 Pokemon, probably a
Double Colorless Energy,
and you'll need
Black Belt, but that's a quick 140 point whack. Hmm... with two Benched
Kindgra Prime, few things survive that.
tl;dr: I don't know what future sets will bring. We might get more anti-Pokemon EX cards. We might get more support for them.
Weezing with Super Explosion is the "update" of
Weezing with Liability, and the latter was a presence in the game.
Don't bank on
Weezing becoming the defacto
Mewtwo EX counter.
Do keep an eye on it and
don't write it off yet. That is just being prudent.