Armarouge (F) @ Life Orb  
Ability: Flash Fire  
Level: 50  
Tera Type: Grass  
EVs: 228 HP / 60 Def / 204 SpA / 4 SpD / 12 Spe  
Modest Nature  
IVs: 0 Atk  
- Armor Cannon  
- Trick Room  
- Expanding Force  
- Wide Guard

Unown
Offensive calcs:
- 204+ SpA Life Orb Armarouge Helping Hand Expanding Force (120 BP) vs. 252 HP / 4 SpD Tera-Fire Annihilape in Psychic Terrain: 218-257 (100.4 - 118.4%) -- guaranteed OHKO
- 204+ SpA Life Orb Armarouge Helping Hand Armor Cannon vs. 4 HP / 252 SpD Hariyama: 220-261 (100 - 118.6%) -- guaranteed OHKO
- 204+ SpA Life Orb Armarouge Armor Cannon vs. 252 HP / 4 SpD Assault Vest Kingambit: 211-250 (101.9 - 120.7%) -- guaranteed OHKO
Defensive calcs:
- 252 Atk Tera-Ground Garchomp Earthquake vs. 228 HP / 60 Def Armarouge: 160-192 (84.6 - 101.5%) -- 6.3% chance to OHKO
- 252+ Atk Tyranitar Crunch vs. 228 HP / 60 Def Armarouge: 146-174 (77.2 - 92%) -- guaranteed 2HKO after sandstorm damage
- 252+ Atk Kingambit Kowtow Cleave vs. 228 HP / 60 Def Armarouge: 152-182 (80.4 - 96.2%) -- guaranteed 2HKO