OU tricky team

Slowbro @ Leftovers
Ability: Regenerator
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
IVs: 0 Atk
- Water Pulse
- Slack Off
- Calm Mind
- Psyshock

Whimsicott @ Leftovers
Ability: Prankster
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
IVs: 0 Atk
- Leech Seed
- Encore
- Substitute
- Moonblast

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Iron Head
- Zen Headbutt
- Thunder Wave
- U-turn

Vaporeon @ Leftovers
Ability: Water Absorb
EVs: 248 HP / 8 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Wish
- Protect
- Ice Beam
- Yawn

Chansey (F) @ Leftovers
Ability: Natural Cure
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Toxic
- Heal Bell
- Seismic Toss
- Soft-Boiled

Klefki @ Light Clay
Ability: Prankster
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Light Screen
- Reflect
- Thunder Wave
- Spikes