With the advent of USUM, I thought I wanted to build a HO Psychic Terrain Team that could capitalize on Ultra Necrozma, which is in my opinion, almost as broken as Mega Ray. The way this team works is simple: Tapu Lele is pivotal to this teams success - keeping it alive is absolutely imperative. I almost always lead with Tapu Lele and run Modest as opposed to Timid simply for the extra output in power. Against a bulky PDon lead, Lele has a positive matchup. Against Yveltal and Marshadow amongst other counter leads, I have to play carefully, as they get a free attack against any of my mons. To avoid losing momentum, I will usually switch into something bulky like Solgaleo which an tank a hit. MMY, Deoxys-A, and Scarf Lunala all can revenge kills pokemon like Yveltal, MGar, Darkrai, and Marshadow - which would otherwise give this team extreme amounts of trouble. Yveltal notably is the hardest 'mon to play around, as MMY only deals roughly 75% with an Ice Beam and Scarf Lunala cannot KO it with Moonblast. But in general, these threats can be dealt with if the team is played correctly. The offensive prowess of this team is simply unmatched and I highly suggest trying it out.
Tapu Lele @ Terrain Extender
Ability: Psychic Surge
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Psychic
- Moonblast
- Shadow Ball
- Nature's Madness
Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
IVs: 0 SpA
- Swords Dance
- Earthquake
- Photon Geyser
- Sunsteel Strike
Lunala @ Choice Scarf
Ability: Shadow Shield
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Moongeist Beam
- Moonblast
- Psyshock
- Focus Blast
Deoxys-Attack @ Life Orb
Ability: Pressure
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- Psycho Boost
- Superpower
- Ice Beam
- Knock Off
Mewtwo @ Mewtwonite Y
Ability: Pressure
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Psystrike
- Ice Beam
- Fire Blast
- Focus Blast
Solgaleo @ Choice Band
Ability: Full Metal Body
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
IVs: 0 SpA
- Sunsteel Strike
- Earthquake
- Flare Blitz
- Stone Edge
IDK looks more like a mono Psychic team. Although 5/6 mons hates meeting Scarf Yveltal which probably you're already aware of. Thanks for sharing though.