Standard Gardevoir/Sylveon

[Intake]

4 Ralts (Burning Shadows)
2 Kirlia (BREAKthrough)
3 Gradevoir GX (Burning Shadows)
3 Eevee (Sun and Moon)
2 Sylveon (Burning Shadows)
2 Diance (Guardians Rising)
3 Tapu Lele GX (Guardians Rising)
1 Alolan Vulpix (Guardians Rising)

4 N (Fates Collide)
4 Sycamore (Break Point)
2 Acerola (Burning Shadows
1 Bridgette (BREAKthrough)
2 Guzma (Burning Shadows)
4 Ultra Ball (Sun and Moon)
3 Rare Candy (Sun and Moon)
2 Field Blower (Guradians Rising)
2 Choice Band (Guardians Rising)
3 Float Stone (BREAKthrough)
1 Rescue Stretcher (Guardians Rising)

8 Fairy Energy (Any Fairy Energy)
4 DCE (Any Set that has DCE)

 

[RealEnderTV]

Honestly I think Sylveon in Gardevoir is too clunky and I’d recommend removing it and change the deck up to make it more Gardevoir Focussed.

I feel Parallel City isn’t needed so I’d remove it and replace it with another Kirlia.

I’d replace the Eeevees and Syleveons with a 1-1 Octillery line.

4 Rare candy is a bit excessive so I’d cut 1 for another Guzma.

I’d just do 1 Acerola. 2 is excessive.

Add 2-3 Diancie. It’s really good in Gardevoir.

Add another Fairy Energy.

Another stuff you could do is add 2 Skyla and a Prof. Letter. I find it do work really well especially since Gardevoir has Secret Spring

I’d also replace Rescue Stretcher with Super Rod. It’s good to be able to get energy back to in Gardevoir decks.

Hope this helps.

 

[Intake]

Thanks Ender that helped I switched a couple of cards but kept some that I like

 

[PlatinumDude]

Honestly I think Sylveon in Gardevoir is too clunky and I’d recommend removing it and change the deck up to make it more Gardevoir Focussed.

I feel Parallel City isn’t needed so I’d remove it and replace it with another Kirlia.

I’d replace the Eeevees and Syleveons with a 1-1 Octillery line.

4 Rare candy is a bit excessive so I’d cut 1 for another Guzma.

I’d just do 1 Acerola. 2 is excessive.

Add 2-3 Diancie. It’s really good in Gardevoir.

Add another Fairy Energy.

Another stuff you could do is add 2 Skyla and a Prof. Letter. I find it do work really well especially since Gardevoir has Secret Spring

I’d also replace Rescue Stretcher with Super Rod. It’s good to be able to get energy back to in Gardevoir decks.

Hope this helps.

While it's true that Diancie has its merits, Sylveon and Parallel City are starting to see play in Gardevoir decks. Sylveon's Magical Ribbon helps gather the cards you need to set up. Its Plea is also lethal when paired with Parallel City against stage 2 decks.

Tablemon did a deck analysis on the Sylveon/Parallel City variant on Gardevoir: