Abomasnow (F) @ Light Clay  
Ability: Snow Warning  
Level: 50  
Tera Type: Ice  
EVs: 252 HP / 36 Def / 220 SpA  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Energy Ball  
- Aurora Veil  
- Blizzard  
- Protect

Unown
Defensive calcs:
- 252+ Atk Life Orb Kingambit Iron Head vs. 252 HP / 36 Def Tera-Ice Abomasnow in Snow: 164-195 (83.2 - 98.9%) -- guaranteed 2HKO
- 252+ Atk Kingambit Iron Head vs. 252 HP / 36 Def Tera-Ice Abomasnow in Snow through Reflect: 84-100 (42.6 - 50.7%) -- 2% chance to 2HKO
Offensive calcs:
- 220+ SpA Tera-Ice Abomasnow Blizzard vs. 4 HP / 0 SpD Hydreigon: 176-208 (104.7 - 123.8%) -- guaranteed OHKO
- 220+ SpA Tera-Ice Abomasnow Blizzard vs. 0 HP / 4 SpD Tera-Ground Garchomp: 180-216 (98.3 - 118%) -- 93.8% chance to OHKO
- 220+ SpA Tera-Ice Abomasnow Blizzard vs. 252 HP / 4 SpD Assault Vest Tera-Flying Kingambit: 120-144 (57.9 - 69.5%) -- guaranteed 2HKO