This is a fun, gimmicky team that actually gives Luvdisc some usefulness. I don't know the exact sets of the entire team but I can give the overall outline.
The two main Pokemon are Luvdisc and Ursaring:
Luvdisc @ Leftovers
Ability: Swift Swim
EVs: 204 HP / 52 Def / 252 Spe
Calm Nature
IVs: 0 Atk
- Entrainment
- Safeguard
- Heal Pulse
- Icy Wind
Ursaring @ Damp Rock
Ability: Guts
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Rain Dance
- Last Resort
The main idea is to send out Luvdisc and Ursaring as the leads. Luvdisc uses Entrainment and gives Ursaring Swift Swim. Ursaring uses Rain Dance. Now you have a speedy Ursaring that can blow everything up with Last Resort. Use Safeguard as soon as possible to keep Ursaring safe from status, and keep it healthy with Heal Pulse.
The other teammates can be Pokemon that benefit from the rain, such as Pokemon with rain-related abilities, moves such as Thunder and Hurricane, or Water types.