Hello, I've just started playing Pokemon tcg this year and need some advice on how to improve my deck. I've been playing it at a local store which hosts Pokemon tournaments and my deck does decently well, considering I'm on a budget. When I'm playing my deck, I often end up losing to Volcanion due to its fast setup. I'm going to be using Mega Gardevoir at Regionals and any advice would be helpful.
Pokemon
4 Xerneas (STS)
2 Hoopa (AOR)
2 M. Gardevoir (PRC)
2 M. Gardevoir (STS)
Trainers
3 Shauna
2 Sycamore
2 N
2 Lysandre
2 Pokemon Fan Club
2 Brock's Grit
1 Hex Maniac
1 Skyla
3 Fairy Garden
4 Gardevoir Spirit Link
4 Ultra Ball
3 VS Seeker
3 Mega turbo
2 Proffesor's Letter
1 Evosoda
Energies
11 Fairy Energy
If you are going to make a hybrid variant, I would strongly recommend you include two copies of one of the Mega Gardevoir and just one of the other, to then have your strategy based around the one you run two of mainly. I know by experience that they actually can work together, but not really in a 2-2 manner. If you want to play a Brilliant Arrow hybrid, then you will include one Despair Ray card to make sure you can discard Pokémon, pressure your opponent, possibly make a comeback at the end of the game when you are low on Energies and handle the dreaded Mega Mewtwo matchup. In that kind of deck, I would run two Shaymin-EX and one Hoopa-EX, four Xerneas and three or four Gardevoir-EX as the Basics.
However, if you want to run mostly the Despair Ray version, then you can just put one copy of the Brilliant Arrow and the two Despair Ray. In that case, the strategy becomes applying early pressure (turn 2 or turn 3) with Despair Ray, after having loaded up Pokémon with Energy using Geomancy, possibly spamming Despair Ray with 110 damage two-shotting most Pokémon while healing with Fairy Drop and leaving the big Knock Outs to the Brilliant Arrow once the board contains 6-7 Energy.
In both situations you want Fairy Garden and Fairy Drop, but in the Despair Ray based one there should be less Xerneas but more Shaymin-EX and Hoopa-EX.
I actually play a hybrid variant of Mega Gardevoir myself, so I will share my decklist to give an example.
Pokémon - 14
2 Hoopa EX AOR
3 Gardevoir EX STS
1 M Gardevoir EX PCL
2 M Gardevoir EX STS
3 Xerneas XY
3 Shaymin EX ROS
Trainer - 37
3 Fairy Garden
2 Lysandre
3 N
3 Professor Sycamore
3 Escape Rope
3 Fairy Drop
4 Gardevoir Spirit Link
2 Mega Turbo
2 Super Rod
4 Trainer's Mail
4 Ultra Ball
4 VS Seeker
Energy - 9
9 Fairy Energy
Hope this helped. I am certain that hybrid Mega Gardevoir decks work if you build them correctly. It is a matter of picking a main strategy while being able to fit the other variant in.
As for modifying your list, I would switch a Brock's Grit for a Super Rod, remove the three Shauna to add one N and two Professor Sycamore, remove the two Professor's Letter to add two Fairy Drop and take out the Evosoda to add in either an Escape Rope or a fourth VS Seeker. I would also strongly recommend you get your hands on one Shaymin-EX because this deck (almost any deck in fact) needs one to do well competitively. Now, I know it is only legal for five more months but it will still have Expanded value afterwards. If you are not going to invest money on one though, I recommend maxing out on the Sycamore/N count.