Yveltal @ Choice Scarf
Ability: Dark Aura
EVs: 204 Def / 80 SpA / 224 Spe
IVs: 0 Atk
Tera Type: Dark / Steel 
Timid Nature
- Foul Play
- Oblivion Wing / Roost
- Defog / Toxic
- U-turn

Yveltal @ Life Orb
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Tera Type: Dark / Flying
Naive Nature
- Dark Pulse
- Oblivion Wing
- Taunt
- Sucker Punch