OU screens with cm reflect type Mega-Latias

Latias-Mega (F) @ Latiasite
Ability: Levitate
EVs: 252 HP / 4 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Recover
- Ice Beam
- Reflect Type

Magearna @ Fightinium Z
Ability: Soul-Heart
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Focus Blast
- Fleur Cannon
- Calm Mind
- Shift Gear

Tapu Koko @ Light Clay
Ability: Electric Surge
EVs: 248 HP / 8 SpD / 252 Spe
Jolly Nature
- Reflect
- Taunt
- U-turn
- Light Screen

Zygarde @ Leftovers
Ability: Aura Break
EVs: 192 HP / 152 Atk / 164 Spe
Jolly Nature
- Substitute
- Dragon Dance
- Thousand Arrows
- Glare

Landorus-Therian (M) @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Defog
- Earthquake
- U-turn
- Explosion

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 4 Def / 252 Spe
Jolly Nature
- Iron Head
- U-turn
- Wish
- Stealth Rock