Tyranitar @ Sitrus Berry  
Ability: Sand Stream  
Level: 50  
EVs: 252 HP / 60 Atk / 60 Def / 28 SpA / 108 SpD  
Brave Nature  
- Rock Slide  
- Protect  
- Assurance  
- Ice Beam

Unown
Options:
- offensive: Lash Out, Crunch, Stone Edge, Foul Play
- supportive: Thunder Wave, Taunt, Dragon Dance
- items: Chople Berry, Weakness Policy
- Ability: Adamant

Unown
Offensive calcs:
- 28 SpA Tyranitar Ice Beam vs. 4 HP / 0 SpD Landorus-T: 164-196 (99.3 - 118.7%) -- 93.8% chance to OHKO
- 60+ Atk Tyranitar Assurance (120 BP) vs. 252 HP / 0 Def Mega Dhelmise: 180-212 (101.6 - 119.7%) -- guaranteed OHKO
Defensive calcs:
- 252+ SpA Tapu Lele Moonblast vs. 252 HP / 108 SpD Tyranitar in Sand: 108-128 (52.1 - 61.8%) -- guaranteed 3HKO after Sitrus Berry recovery
- 252 Atk Urshifu-Rapid Strike Surging Strikes (3 hits) vs. 252 HP / 60 Def Tyranitar on a critical hit: 180-216 (86.9 - 104.3%) -- guaranteed 2HKO after Sitrus Berry recovery
- 252 Atk Urshifu-Rapid Strike Surging Strikes (3 hits) vs. 252 HP / 60 Def Tyranitar on a critical hit: 180-216 (86.9 - 104.3%) -- approx. 6.3% chance to OHKO
- 252+ SpA Empoleon Origin Pulse vs. 252 HP / 108 SpD Tyranitar in Sand: 92-110 (44.4 - 53.1%) -- 4.3% chance to 2HKO after Sitrus Berry recovery
- -1 252+ Atk Landorus-T Earthquake vs. 252 HP / 60 Def Tyranitar: 86-104 (41.5 - 50.2%) -- guaranteed 3HKO after Sitrus Berry recovery

Unown
Useful partners:
- Sand abuser: Excadrill, Dracozolt
- others: Mega Hawlucha, Mega Salamence