Tapu Lele @ Psychium Z  
Ability: Psychic Surge  
Level: 50  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Psychic  
- Ally Switch  
- Moonblast  
- Protect

Unown
Options:
- offensive: Psyshock, Focus Blast, Dazzling Gleam, Shadow Ball, Thunderbolt
- supportive: Taunt
- items: Twisted Spoon, Fightinium Z, Life Orb

Unown
Offensive calcs:
- 252+ SpA Tapu Lele Shattered Psyche (175 BP) vs. 4 HP / 0 SpD Assault Vest Landorus-T in Psychic Terrain: 171-202 (103.6 - 122.4%) -- guaranteed OHKO
- 252+ SpA Tapu Lele Shattered Psyche (175 BP) vs. 252 HP / 4 SpD Mega Walrein in Psychic Terrain: 231-273 (106.4 - 125.8%) -- guaranteed OHKO

Unown
Useful partners:
- Psychic Terrain abuser: Mega Meowstic-F, Mega Golduck, Mega Alakazam, Mega Metagross
- others: Mega Cacturne, Mega Bisharp

Tapu Lele @ Choice Specs  
Ability: Psychic Surge  
Level: 50  
EVs: 252 HP / 84 Def / 108 SpA / 4 SpD / 60 Spe  
Modest Nature  
IVs: 0 Atk  
- Psychic  
- Dazzling Gleam  
- Moonblast  
- Shadow Ball

Unown
Move options:
- offensive: Psyshock, Focus Blast, Thunderbolt

Unown
Offensive calcs:
- 108+ SpA Choice Specs Tapu Lele Psychic vs. 252 HP / 252+ SpD Amoonguss in Psychic Terrain: 246-290 (111.3 - 131.2%) -- guaranteed OHKO
- 108+ SpA Choice Specs Tapu Lele Dazzling Gleam vs. 0 HP / 4 SpD Urshifu-Rapid Strike: 224-266 (128 - 152%) -- guaranteed OHKO
- 108+ SpA Choice Specs Tapu Lele Dazzling Gleam vs. 0 HP / 4 SpD Zapdos-Galar: 164-194 (99.3 - 117.5%) -- 87.5% chance to OHKO
Defensive calcs:
- 4 Atk Kartana Smart Strike vs. 252 HP / 84 Def Tapu Lele: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO
- 252 SpA Mega Gengar Shadow Ball vs. 252 HP / 4 SpD Tapu Lele: 150-176 (84.7 - 99.4%) -- guaranteed 2HKO

Unown
Useful partners:
- Psychic Terrain abuser: Mega Meowstic-F, Mega Golduck, Mega Alakazam, Mega Metagross
- others: Mega Cacturne, Mega Bisharp

Tapu Lele @ Choice Scarf  
Ability: Psychic Surge  
Level: 50  
EVs: 60 HP / 4 Def / 196 SpA / 4 SpD / 244 Spe  
Modest Nature  
IVs: 0 Atk  
- Psychic  
- Dazzling Gleam  
- Moonblast  
- Nature's Madness

Unown
Move options:
- offensive: Psyshock, Focus Blast, Thunderbolt,
- supportive: Protect

Unown
Offensive calcs:
- 196+ SpA Tapu Lele Psychic vs. 252 HP / 4 SpD Mega Gengar: 168-200 (100.5 - 119.7%) -- guaranteed OHKO
Defensive calcs:
- 252 Atk Urshifu-Single Strike Wicked Blow vs. 60 HP / 4 Def Tapu Lele on a critical hit: 129-153 (84.3 - 100%) -- 6.3% chance to OHKO
- 252 SpA Spectrier Shadow Ball vs. 60 HP / 4 SpD Tapu Lele: 132-156 (86.2 - 101.9%) -- 6.3% chance to OHKO

Unown
Useful partners:
- Psychic Terrain abuser: Mega Meowstic-F, Mega Golduck, Mega Alakazam, Mega Metagross
- others: Mega Cacturne, Mega Bisharp