Cacturne @ Cacturnite  
Ability: Water Absorb  
Level: 50  
EVs: 252 HP / 132 Atk / 12 Def / 100 SpA / 12 SpD  
Quiet Nature  
- Energy Ball  
- Spiky Shield  
- Assurance  
- Foul Play

Unown
Move options:
- offensive: Brine, Superpower, Dark Pulse
- supportive: Destiny Bond, Strength Sap

Unown
Offensive calcs:
- 132 Atk Mega Cacturne Foul Play vs. 252 HP / 0 Def Mega Dhelmise: 180-212 (101.6 - 119.7%) -- guaranteed OHKO
- 100+ SpA Mega Cacturne Energy Ball vs. 4 HP / 0 SpD Landorus: 84-99 (50.9 - 60%) -- guaranteed 2HKO
- 100+ SpA Mega Cacturne Energy Ball vs. 252 HP / 76+ SpD Tapu Fini: 96-114 (54.2 - 64.4%) -- guaranteed 2HKO
- -1 132 Atk Mega Cacturne Assurance (120 BP) vs. 4 HP / 0 Def Tapu Lele: 73-87 (50 - 59.5%) -- guaranteed 2HKO
- -1 132 Atk Mega Cacturne Assurance (120 BP) vs. 252 HP / 0 Def Aegislash-Shield: 86-104 (51.4 - 62.2%) -- guaranteed 2HKO
Defensive calcs:
- 252+ Atk Rillaboom U-turn vs. 252 HP / 12 Def Mega Cacturne: 152-180 (85.8 - 101.6%) -- 6.3% chance to OHKO
- 252 SpA Life Orb Sheer Force Landorus Sludge Bomb vs. 252 HP / 12 SpD Mega Cacturne: 151-179 (85.3 - 101.1%) -- 12.5% chance to OHKO

Unown
Useful partners:
- Super Fang / Nature's Madness user: Tapu Koko, Tapu Fini, Crobat
- strong spread damage user: Tapu Lele, Landorus-T, Galarian Moltres
- strong attackers: Urshifu-Rapid Strike, Galarian Zapdos, Nihilego, etc.