After a bunch of testing of Ultra Necrozma GX/Malamar in Standard, I was thinking how well it would do in the Expanded format. I'm not entirely sure yet, haven't done any testing whatsoever, so here is a prototype list. Since it can easily hit 210, OHKOing Zoroark GX with ease, I don't see this archetype having very much trouble at all in the Expanded format.
Pokemon:
3x Ultra Necrozma GX
4x Inkay
4x Malamar
2x Tapu Lele GX
1x Mew FCO
1x Keldeo EX
1x Sudowoodo GRI
Trainers:
3x Professor Sycamore
2x Guzma
1x N
1x Colress
1x Brigette
1x Hex Maniac
1x Pokemon Ranger
4x VS Seeker
4x Ultra Ball
4x Mysterious Treasure
3x Float Stone
2x Field Blower
2x Choice Band
1x Professor's Letter
1x Super Rod
1x Computer Search
Energy:
1x Beast Energy Prism Star
3x Metal Energy
8x Psychic Energy
Pokemon:
3x Ultra Necrozma GX
4x Inkay
4x Malamar
2x Tapu Lele GX
1x Mew FCO
1x Keldeo EX
1x Sudowoodo GRI
Trainers:
3x Professor Sycamore
2x Guzma
1x N
1x Colress
1x Brigette
1x Hex Maniac
1x Pokemon Ranger
4x VS Seeker
4x Ultra Ball
4x Mysterious Treasure
3x Float Stone
2x Field Blower
2x Choice Band
1x Professor's Letter
1x Super Rod
1x Computer Search
Energy:
1x Beast Energy Prism Star
3x Metal Energy
8x Psychic Energy