How to build mega latias ex deck

silentcat11

I built a mega latias ex deck, but I think it's missing something. If you have any suggesting please let me know. I would appreciate it. This is the deck list:

Pokemon: 22

Mega latias ex: 3

Fezandipiti ex: 1

Dragapult ex: 2

Xatu: 3

Latios: 3

Darkloak: 3

Natu: 3

Dreepy: 3

Shaymin: 1

Trainings: 28

Buddy-buddy poffin: 2

Lillies determination: 2

Rare Candy: 3

Lively stadium: 2

Super rod: 1

Max rod: 1

Nest ball: 2

Earthen Vessel: 2

Arven: 2

Switch: 2

Air balloon: 3

Boss's order's: 2

Crispin: 2

Energy Retrieval: 2

Energy: 10

Psychic Energy: 6

Fire Energy: 4

DoubleCure

With significant changes, if you want to check it out.

Pokémon: 13

3 Pecharunt PR-SV 149

2 Brute Bonnet PAR 123

2 Squawkabilly ex PAL 169

2 Mega Latias ex MEG 100

1 Latias ex SSP 76

1 Bloodmoon Ursaluna ex TWM 141

1 Fezandipiti ex SFA 38

1 Mew ex MEW 151

Trainer: 38

4 Carmine TWM 145

2 Professor's Research JTG 155

2 Iono PAL 185

2 Boss's Orders MEG 114

1 Crispin SCR 133

4 Nest Ball SVI 181

4 Ultra Ball MEG 131

4 Pokégear 3.0 SVI 186

3 Night Stretcher SFA 61

1 Super Rod PAL 188

1 Secret Box TWM 163

4 Ancient Booster Energy Capsule TEF 140

2 Binding Mochi PRE 95

4 Perilous Jungle TEF 156

Energy: 9

4 Jet Energy PAL 190

2 Fire Energy MEE 2

2 Psychic Energy MEE 5

1 Darkness Energy MEE 7