Obstagoon @ Obstagoonite  
Ability: Defiant  
Level: 50  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
IVs: 0 SpA  
- Throat Chop  
- Parting Shot  
- Double-Edge  
- Obstruct

Unown
Move options:
- offensive: Close Combat
- supportive: Icy Wind, Snarl

Unown
Offensive calcs:
- +1 252 Atk Mega Obstagoon Double-Edge vs. 4 HP / 0 Def Landorus-T: 169-199 (102.4 - 120.6%) -- guaranteed OHKO

Unown
Useful partners:
- Intimidate: Landorus-T, Incineroar
- others: Regieleki