Hatterene (F) @ Fairium Z  
Ability: Magic Bounce  
Level: 50  
EVs: 244 HP / 148 SpA / 116 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Psychic  
- Trick Room  
- Dazzling Gleam  
- Protect

Unown
Options:
- offensive: Expanding Force, Mystical Fire, Misty Explosion
- supportive: Helping Hand, Heal Pulse, Charm
- items: Life Orb, Sitrus Berry, Kasib Berry, Focus Sash

Unown
Offensive calcs:
- 148+ SpA Hatterene Twinkle Tackle (160 BP) vs. 4 HP / 0 SpD Landorus-T: 174-205 (105.4 - 124.2%) -- guaranteed OHKO
- 148+ SpA Hatterene Twinkle Tackle (160 BP) vs. 252 HP / 4 SpD Mega Reuniclus: 326-386 (150.2 - 177.8%) -- guaranteed OHKO
Defensive calcs:
- 252+ SpA Aegislash-Blade Shadow Ball vs. 244 HP / 116 SpD Hatterene: 138-164 (84.6 - 100.6%) -- 6.3% chance to OHKO

Unown
Useful partners:
- Trick Room abusers: Mega Reuniclus, Mega Gigalith, Torkoal, Glastrier, Cursola
- redirection: Indeedee-F