these are the changes i would make
-1 Spritzee(no need for pyramid lines)
-1 Xerneas
-1 Malamar EX(as good as it is, i dont think he fits what you are trying to do)
-1 Yveltal
-1 Charizard EX(he kind of really doesnt have a purpose in this deck)
-1 Mewtwo EX(this is a personal preference as i feel Mew EX brings more "Versatility" to the field)
consider adding these pokemon instead
+1 Diancie EX
+1 M Diancie EX(i say this cuz its diamond storm does 120(140 with muscle band) and prevents all dmg from your opponents EX during their next turn)
+2 Mew EX(again personal preference, but if you stick with Mewtwo, add a second one)
+1 Swirlix
+1 Slurpuff w/ Sweet Veil(as long as you have a fairy energy attached to a pokemon, they are immune to all status effects, kind of like Virizion EX, but for fairy energy instead of grass)
now for your trainers
-1 Jamming Net(if you run this right, the damage your opponent does wont matter with a souped up M Gardevoir with a brilliant arrow hitting for 240+)
-1 Head Ringer(dont focus on locking your opponent or making it harder for them to use attacks, there are decks with pokemon abilities that do that way better than the trainer can, plus you cant risk someone moving that tool to a garbador)
-1 Lysandre(i'll explain when i advise what you should add)
-1 VS Seeker(same as Lysandre)
-1 Xerosic(dont waste a trainer card like this when there is a way better card as an item that will do exactly the same thing you need xerosic for)
-1 Corless(this is mostly a preference, but you can keep if you like)
and here is what i feel would be better trainers
+1 Lysandre's Trump Card(best recover card out there, both players shuffle their discard back into their deck, and seeing as you dont have energy retrievals, once your energies are gone, you lose a lot of attack power, this helps get them back, as well as a VS Seeker you may have used earlier, see the combo yet)
+1 Muscle Band(keep your heavy hitters strong)
+2 Startling Megaphone(if you are worried bout garbador, megaphone is way better at getting rid of tool cards as it discards ALL tool cards attached to your opponent's pokemon)
+2 Skyla OR +1 Skyla and +1 Teammates(either 2 skyla or 1 and 1, skyla gets you any trainer from your deck and is pretty staple for this format, and teammates which is the new hotness gets you any 2 cards you want when your pokemon gets knocked out by your opponent during their turn)
And lastly your energy
no special list here, just drop the rainbows for fairy energy, rainbows work best in dragon decks which this is not, and the rainbow energy sadly doesnt qualify for a fairy energy for gardevoir and having them in your deck hurts her hitting power, 7 fairy energy = 210 max dmg, 11 fairy energy = 330 max dmg, and dont forget muscle band adding to that
i have a similar deck to this and this is about what i run, for me it runs pretty fast, and its good and wrecking shop, i hope i helped a bit, this is merely suggestions though in the end its what you want to run and what fits best for you
