Ludicolo @ Assault Vest  
Ability: Swift Swim  
Level: 50  
EVs: 252 HP / 108 Def / 60 SpA / 4 SpD / 84 Spe  
Modest Nature  
- Scald  
- Fake Out  
- Energy Ball  
- Icy Wind

Unown
Move options:
- offensive: Hydro Pump, Muddy Water, Giga Drain

Unown
Offensive calcs:
- 60+ SpA Ludicolo Scald vs. 0 HP / 4 SpD Mega Meowstic-F in Rain: 76-90 (51 - 60.4%) -- guaranteed 2HKO
- 60+ SpA Ludicolo Scald vs. 4 HP / 0 SpD Landorus-T in Rain: 176-210 (106.6 - 127.2%) -- guaranteed OHKO
Defensive calcs:
- 252+ Atk Parental Bond Mega Kangaskhan Double-Edge vs. 252 HP / 108 Def Ludicolo: 160-189 (85.5 - 101%) -- 2% chance to OHKO
- 252 SpA Mega Gengar Sludge Bomb vs. 252 HP / 4 SpD Assault Vest Ludicolo: 126-150 (67.3 - 80.2%) -- guaranteed 2HKO
- 252+ SpA Mega Charizard-Y Heat Wave vs. 252 HP / 4 SpD Assault Vest Ludicolo in Sun: 76-91 (40.6 - 48.6%) -- guaranteed 3HKO
- 252+ SpA Mega Charizard-Y Overheat vs. 252 HP / 4 SpD Assault Vest Ludicolo in Sun: 142-168 (75.9 - 89.8%) -- guaranteed 2HKO
- +2 252+ SpA Fairy Aura Mega Meowstic-F Moonblast vs. 252 HP / 4 SpD Assault Vest Ludicolo: 160-189 (85.5 - 101%) -- 6.3% chance to OHKO

Unown
Useful partners:
- Rain setter: Pelipper, Mega Walrein, Mega Dhelmise

Ludicolo @ Waterium Z  
Ability: Swift Swim  
Level: 50  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
- Muddy Water  
- Fake Out  
- Energy Ball  
- Protect

Unown
Options:
- offensive: Hydro Pump, Scald, Giga Drain, Ice Beam
- item: Life Orb
- Nature: Timid

Unown
Offensive calcs:
- 252+ SpA Ludicolo Energy Ball vs. 0 HP / 4 SpD Urshifu-Rapid Strike: 198-234 (113.1 - 133.7%) -- guaranteed OHKO
- 252+ SpA Ludicolo Muddy Water vs. 4 HP / 0 SpD Landorus-T in Rain: 176-210 (106.6 - 127.2%) -- guaranteed OHKO
- 252+ SpA Ludicolo Muddy Water vs. 0 HP / 0 SpD Spectrier in Rain: 88-105 (50.2 - 60%) -- guaranteed 2HKO
- 252+ SpA Ludicolo Hydro Vortex (175 BP) vs. 252 HP / 4 SpD Mega Dhelmise in Heavy Rain: 177-208 (100 - 117.5%) -- guaranteed OHKO
- 252+ SpA Ludicolo Hydro Vortex (175 BP) vs. 252 HP / 4 SpD Zapdos in Rain: 210-247 (106.5 - 125.3%) -- guaranteed OHKO

Unown
Useful partners:
- Rain setter: Pelipper, Mega Walrein, Mega Dhelmise