CM Reun + Mega venu

Venusaur-Mega @ Venusaurite
Ability: Thick Fat
Shiny: Yes
EVs: 248 HP / 96 Def / 144 SpD / 20 Spe
Bold Nature
IVs: 0 Atk
- Giga Drain
- Sludge Bomb
- Synthesis
- Leech Seed

Garchomp @ Rocky Helmet
Ability: Rough Skin
EVs: 248 HP / 164 Def / 96 Spe
Impish Nature
- Stealth Rock
- Earthquake
- Dragon Tail
- Toxic

Slowbro @ Leftovers
Ability: Regenerator
EVs: 252 HP / 232 Def / 24 SpD
Bold Nature
IVs: 0 Atk
- Scald
- Slack Off
- Psyshock
- Thunder Wave

Reuniclus @ Colbur Berry
Ability: Magic Guard
EVs: 252 HP / 200 Def / 56 SpD
Bold Nature
IVs: 0 Atk
- Calm Mind
- Psyshock
- Focus Blast
- Recover

Latios @ Life Orb
Ability: Levitate
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Surf
- Recover
- Defog

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 224 SpD / 32 Spe
Careful Nature
- Iron Head
- Body Slam
- Wish
- Protect