So after playing 40-50 games with my Gardevoir GX deck, this is the list I'm currently playing. I'd like some feedback. Feel free to post your own Gardevoir GX list so we can compare and share ideas. I'll go into detail on some of my choices.
4-3-4(1) Gardevoir GX/Gallade split
I initially started with 3 Gardevoir and 1 Gallade before removing the Gallade for a fourth Gardevoir. The deck definitely runs better with 4 Gardevoir, but I also liked the option of using Gallade as an alternate attacker. Besides getting the OHKO on things like Drampa GX, it's also able to deal with the new Alolan Ninetales, which would otherwise give this deck a lot of trouble without it. Premonition can also come in handy at times as well.
Oranguru over Octillery
I can already see it now. Someone is going to point out that I'm running Gallade without Octillery. I understand that Premonition and Abyssal Hand can be a strong combo. However, I don't have the deck space to fit in a 2-2 line of Octillery. I could maybe squeeze in a 1-1 line (and that's a big maybe because I honestly don't know what I would take out), but if I'm going to run Octillery, it needs to be a 2-2 line for consistency. Oranguru only takes up one spot, it's easy to get on the field, provides draw support (which I can still combo with Premonition), and can be a solid attacker against certain match-ups, something that Octillery can't provide.
Diancie over Alolan Vulpix or Sylveon GX
I got into a big discussion on here about using Diancie over Alolan Vulpix or Sylveon GX. Based off my own experiences with the deck, Diancie is the best option for getting Gardevoir out as quickly as possible. I tried both Alolan Vulpix and Sylveon GX and they were always N'd on my opponent's next turn. Diancie gives you the guaranteed evolution, and in a format where you want your deck to be as consistent as possible, it is the best option. I will not remove Diancie.
I feel like the rest of the deck is pretty self-explanatory, but if you have any questions on why I run something, let me know.
****** Pokémon Trading Card Game Deck List ******
##Pokémon - 18
* 4 Ralts BUS 91
* 3 Kirlia BUS 92
* 4 Gardevoir-GX BUS 140
* 1 Gallade BKT 84
* 2 Diancie BUS 94
* 1 Oranguru PR-SM SM13
* 3 Tapu Lele-GX GRI 137
##Trainer Cards - 29
* 4 Professor Sycamore BKP 107
* 4 N FAC 105
* 3 Guzma BUS 115
* 2 Skyla BKT 148
* 2 Acerola BUS 112
* 1 Brigette BKT 161
* 4 Ultra Ball SUM 135
* 3 Rare Candy SUM 129
* 2 Field Blower GRI 125
* 1 Professor's Letter BKT 146
* 3 Float Stone BKT 137
##Energy - 13
* 4 Double Colorless Energy SUM 136
* 9 Fairy Energy 9
Total Cards - 60
****** Deck List Generated by the Pokémon TCG Online www.pokemon.com/TCGO ******
4-3-4(1) Gardevoir GX/Gallade split
I initially started with 3 Gardevoir and 1 Gallade before removing the Gallade for a fourth Gardevoir. The deck definitely runs better with 4 Gardevoir, but I also liked the option of using Gallade as an alternate attacker. Besides getting the OHKO on things like Drampa GX, it's also able to deal with the new Alolan Ninetales, which would otherwise give this deck a lot of trouble without it. Premonition can also come in handy at times as well.
Oranguru over Octillery
I can already see it now. Someone is going to point out that I'm running Gallade without Octillery. I understand that Premonition and Abyssal Hand can be a strong combo. However, I don't have the deck space to fit in a 2-2 line of Octillery. I could maybe squeeze in a 1-1 line (and that's a big maybe because I honestly don't know what I would take out), but if I'm going to run Octillery, it needs to be a 2-2 line for consistency. Oranguru only takes up one spot, it's easy to get on the field, provides draw support (which I can still combo with Premonition), and can be a solid attacker against certain match-ups, something that Octillery can't provide.
Diancie over Alolan Vulpix or Sylveon GX
I got into a big discussion on here about using Diancie over Alolan Vulpix or Sylveon GX. Based off my own experiences with the deck, Diancie is the best option for getting Gardevoir out as quickly as possible. I tried both Alolan Vulpix and Sylveon GX and they were always N'd on my opponent's next turn. Diancie gives you the guaranteed evolution, and in a format where you want your deck to be as consistent as possible, it is the best option. I will not remove Diancie.
I feel like the rest of the deck is pretty self-explanatory, but if you have any questions on why I run something, let me know.
****** Pokémon Trading Card Game Deck List ******
##Pokémon - 18
* 4 Ralts BUS 91
* 3 Kirlia BUS 92
* 4 Gardevoir-GX BUS 140
* 1 Gallade BKT 84
* 2 Diancie BUS 94
* 1 Oranguru PR-SM SM13
* 3 Tapu Lele-GX GRI 137
##Trainer Cards - 29
* 4 Professor Sycamore BKP 107
* 4 N FAC 105
* 3 Guzma BUS 115
* 2 Skyla BKT 148
* 2 Acerola BUS 112
* 1 Brigette BKT 161
* 4 Ultra Ball SUM 135
* 3 Rare Candy SUM 129
* 2 Field Blower GRI 125
* 1 Professor's Letter BKT 146
* 3 Float Stone BKT 137
##Energy - 13
* 4 Double Colorless Energy SUM 136
* 9 Fairy Energy 9
Total Cards - 60
****** Deck List Generated by the Pokémon TCG Online www.pokemon.com/TCGO ******