Landorus-Therian (M) @ Groundium Z  
Ability: Intimidate  
Level: 50  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
IVs: 0 SpA  
- Earthquake  
- Swords Dance  
- Rock Slide  
- Protect

Unown
Options:
- offensive: Fly, Superpower, Stone Edge, Knock Off
- supportive: U-Turn, Bulldoze, Rock Tomb, Imprison
- item: Flyinium Z, Life Orb

Unown
Offensive calcs:
- 252 Atk Landorus-T Tectonic Rage vs. 252 HP / 4 Def Mega Slowking: 198-234 (98 - 115.8%) -- 87.5% chance to OHKO
- -1 252 Atk Landorus-T Tectonic Rage vs. 236 HP / 4 Def Incineroar: 240-284 (120 - 142%) -- guaranteed OHKO
- -1 252 Atk Landorus-T Tectonic Rage vs. 252 HP / 4 Def Mega Empoleon: 216-254 (113 - 132.9%) -- guaranteed OHKO

Landorus-Therian (M) @ Choice Scarf  
Ability: Intimidate  
Level: 50  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
IVs: 0 SpA  
- Earthquake  
- U-turn  
- Rock Slide  
- Superpower

Unown
Move options:
- offensive: Stone Edge, Knock Off
- supportive: Bulldoze, Rock Tomb, Protect

Unown
Offensive calcs:
- 252 Atk Landorus-T Superpower vs. 0 HP / 0 Def Arctozolt: 162-192 (98.1 - 116.3%) -- 87.5% chance to OHKO

Landorus-Therian (M) @ Assault Vest  
Ability: Intimidate  
Level: 50  
EVs: 228 HP / 76 Atk / 4 Def / 28 SpD / 172 Spe  
Jolly Nature  
IVs: 0 SpA  
- Earthquake  
- U-turn  
- Rock Slide  
- Superpower

Unown
Move options:
- offensive: Stone Edge, Knock Off
- supportive: Bulldoze, Rock Tomb

Unown
Offensive calcs:
- 76 Atk Landorus-T Earthquake vs. 0 HP / 4 Def Excadrill: 186-218 (100.5 - 117.8%) -- guaranteed OHKO
- 76 Atk Landorus-T Rock Slide vs. 0 HP / 4 Def Mega Charizard-Y: 152-180 (99.3 - 117.6%) -- 87.5% chance to OHKO
Defensive calcs:
- 252 SpA Ninetales-Alola Blizzard vs. 228 HP / 28 SpD Assault Vest Landorus-T: 160-192 (82.9 - 99.4%) -- guaranteed 2HKO after hail damage
- +1 252 SpA Mega Empoleon Origin Pulse vs. 228 HP / 28 SpD Assault Vest Landorus-T: 164-194 (84.9 - 100.5%) -- 6.3% chance to OHKO
- 252+ SpA Mega Charizard-Y Overheat vs. 228 HP / 28 SpD Assault Vest Landorus-T in Sun: 165-195 (85.4 - 101%) -- 6.3% chance to OHKO