I'm trying to build a new deck and I'd like some constructive criticism. The general idea is get Shining mew, Rayquzara and Espeon EX in the discard pile and use Marshadow GX's ability to use their attacks to power up Necrozma GX and to retrive the discarded energy. Silvally GX is there to move the basics about and to provide a second attacking option.
2x Type Null
2x Silvally GX
3x Marshadow GX
3x Necrozma GX
1x Tapu Lele
2x Shining New
2x Rayquzara
1x Espeon EX
16 pokemon
4x Sycamore
2x Brigette
2x Guzma
2x Acerola
2x Sophocles
2x Skyla
1x Plumeria
15 support
4x Ultra ball
2x Field Blower
2x Choice Band
2x Fighting Fury Belt
2x Switch
12 items
14x Psychic energy
3x Double Colourless
17 Energy
2x Type Null
2x Silvally GX
3x Marshadow GX
3x Necrozma GX
1x Tapu Lele
2x Shining New
2x Rayquzara
1x Espeon EX
16 pokemon
4x Sycamore
2x Brigette
2x Guzma
2x Acerola
2x Sophocles
2x Skyla
1x Plumeria
15 support
4x Ultra ball
2x Field Blower
2x Choice Band
2x Fighting Fury Belt
2x Switch
12 items
14x Psychic energy
3x Double Colourless
17 Energy