Tapu Fini @ Leftovers  
Ability: Misty Surge  
Level: 50  
EVs: 252 HP / 172 Def / 52 SpA / 28 SpD / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Muddy Water  
- Calm Mind  
- Moonblast  
- Protect

Unown
Options:
- offensive: Scald
- items: Wiky Berry, Waterium Z

Unown
Offensive calcs:
- 52+ SpA Tapu Fini Moonblast vs. 0 HP / 4 SpD Urshifu-Rapid Strike: 180-212 (102.8 - 121.1%) -- guaranteed OHKO
- +1 52+ SpA Tapu Fini Moonblast vs. 0 HP / 4 SpD Regieleki: 153-180 (98.7 - 116.1%) -- 87.5% chance to OHKO
Defensive calcs:
- 252 Atk Kartana Leaf Blade vs. 252 HP / 172 Def Tapu Fini: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO
- 252 SpA Transistor Regieleki Thunderbolt vs. 252 HP / 28 SpD Tapu Fini: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO

Tapu Fini @ Wiki Berry  
Ability: Misty Surge  
Level: 50  
EVs: 252 HP / 172 Def / 12 SpA / 44 SpD / 28 Spe  
Calm Nature  
IVs: 0 Atk  
- Moonblast  
- Protect  
- Icy Wind  
- Heal Pulse

Unown
Move options:
- offensive: Scald, Muddy Water
- supportive: Nature's Madness

Unown
Defensive calcs:
- 252 Atk Kartana Leaf Blade vs. 252 HP / 172 Def Tapu Fini: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO
- 252+ SpA Tapu Lele Shattered Psyche (175 BP) vs. 252 HP / 44+ SpD Tapu Fini in Psychic Terrain: 151-178 (85.3 - 100.5%) -- 6.3% chance to OHKO
- 252 SpA Transistor Regieleki Thunderbolt vs. 252 HP / 44+ SpD Tapu Fini: 134-162 (75.7 - 91.5%) -- guaranteed 2HKO

Tapu Fini @ Choice Specs  
Ability: Misty Surge  
Level: 50  
EVs: 252 HP / 4 Def / 220 SpA / 28 SpD / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Hydro Pump  
- Dazzling Gleam  
- Moonblast  
- Muddy Water

Unown
Move option:
- offensive: Scald

Unown
Offensive calcs:
- 220+ SpA Choice Specs Tapu Fini Muddy Water vs. 4 HP / 0 SpD Landorus-T: 180-212 (109 - 128.4%) -- guaranteed OHKO
- 220+ SpA Choice Specs Tapu Fini Hydro Pump vs. 252 HP / 4 SpD Gigalith in Sand: 194-230 (101 - 119.7%) -- guaranteed OHKO
- 220+ SpA Choice Specs Tapu Fini Hydro Pump vs. 252 HP / 4 SpD Glastrier: 111-132 (53.6 - 63.7%) -- guaranteed 2HKO
Defensive calcs:
- 4 Atk Kartana Leaf Blade vs. 252 HP / 4 Def Tapu Fini: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO
- 252 SpA Transistor Regieleki Thunderbolt vs. 252 HP / 28 SpD Tapu Fini: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO