Gigalith @ Gigalite  
Ability: Sturdy  
Level: 50  
EVs: 228 HP / 244 SpA / 36 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Meteor Beam  
- Trick Room  
- Earth Power  
- Protect

Unown
Options:
- offensive: Rock Slide, Solar Beam
- supportive: Wide Guard, Synthesis
- ability: Sand Stream

Unown
Offensive calcs:
- +1 244+ SpA Mega Gigalith Meteor Beam vs. 4 HP / 0 SpD Landorus-T: 169-199 (102.4 - 120.6%) -- guaranteed OHKO
- +1 244+ SpA Mega Gigalith Meteor Beam vs. 252 HP / 0 SpD Glastrier: 260-308 (125.6 - 148.7%) -- guaranteed OHKO
Defensive calcs:
- 252+ SpA Pelipper Scald vs. 228 HP / 36 SpD Mega Gigalith in Rain: 162-192 (85.7 - 101.5%) -- 6.3% chance to OHKO
- 252 Atk Urshifu-Single Strike Close Combat vs. 228 HP / 0 Def Mega Gigalith: 138-164 (73 - 86.7%) -- guaranteed 2HKO

Unown
Useful partners:
- Sun setter / abuser: Torkoal, Venusaur
- Fake out user / redirection: Incineroar, Indeedee
- supplementary Trick Room setter: Hatterene
- Sand abuser if Sand Stream: Excadrill, Dracozolt