Delibird @ Delibirdite  
Ability: Insomnia  
Level: 50  
EVs: 244 HP / 36 Def / 228 SpD  
Calm Nature  
- Icy Wind  
- Detect  
- U-turn  
- Fake Out

Unown
Move options:
- offensive: Ice Beam, Freeze-Dry
- supportive: Ice Shard, Helping Hand, Memento

Unown
Defensive calcs:
- 252 SpA Transistor Regieleki Thunderbolt vs. 244 HP / 228+ SpD Mega Delibird: 126-150 (83.4 - 99.3%) -- guaranteed 2HKO
- 252+ SpA Aegislash-Blade Flash Cannon vs. 244 HP / 228+ SpD Mega Delibird: 104-126 (68.8 - 83.4%) -- guaranteed 2HKO
- 252 Atk Kartana Smart Strike vs. 244 HP / 36 Def Mega Delibird: 128-152 (84.7 - 100.6%) -- 6.3% chance to OHKO

Unown
Useful partners:
- Weakness Policy: Galarian Moltres, Landorus-T
- Power Herb: Nihilego