Basc + Melo Tailwind gen9nu

Swampert @ Leftovers
Ability: Torrent
Gender: M
Tera Type: Steel
Careful Nature
EVs: 252 HP / 4 Atk / 252 SpD
- Earthquake
- Flip Turn
- Knock Off
- Stealth Rock

Basculegion @ Choice Band
Ability: Adaptability
Tera Type: Flying
Adamant Nature
EVs: 252 Atk / 4 SpD / 252 Spe
- Aqua Jet
- Flip Turn
- Tera Blast
- Wave Crash

Klefki @ Lagging Tail
Ability: Prankster
Gender: M
Tera Type: Ghost
Bold Nature
EVs: 252 HP / 128 Def / 128 SpD
IVs: 0 Atk
- Foul Play
- Spikes
- Switcheroo
- Thunder Wave

Meloetta @ Throat Spray
Ability: Serene Grace
Tera Type: Ghost
Timid Nature
EVs: 252 SpA / 4 SpD / 252 Spe
IVs: 0 Atk
- Focus Blast
- Hyper Voice
- Psyshock
- Shadow Ball

Tornadus @ Life Orb
Ability: Prankster
Tera Type: Steel
Timid Nature
EVs: 4 Def / 252 SpA / 252 Spe
IVs: 0 Atk
- Bleakwind Storm
- Grass Knot
- Heat Wave
- Tailwind

Tsareena @ Covert Cloak
Ability: Queenly Majesty
Tera Type: Poison
Impish Nature
EVs: 252 HP / 252 Def / 4 Spe
- Knock Off
- Power Whip
- Rapid Spin
- Synthesis