scarf medi part 1 need help only 3 mons so far.

Medicham @ Choice Scarf
Ability: Pure Power
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- High Jump Kick
- Zen Headbutt
- Ice Punch
- Poison Jab

Magneton @ Choice Specs
Ability: Analytic
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
- Volt Switch
- Flash Cannon
- Thunderbolt
- Hidden Power [Ice]

Crobat @ Black Sludge
Ability: Infiltrator
EVs: 52 HP / 252 Atk / 204 Spe
Jolly Nature
- Brave Bird
- U-turn
- Roost
- Defog