I've understood Ev's and Iv's and some stuff like that for a while, but team building is new. I've tried a few things on Showdown, and any help would be great. Here's my team
Forretress @ Custap Berry
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Relaxed Nature
- Stealth Rock
- Explosion
- Rapid Spin
- Volt Switch
Just to set up stealth rocks while being able to switch into them and take them out
Chandelure @ Choice Scarf
Ability: Flash Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Fire Blast
- Shadow Ball
- Energy Ball
- Trick
Just a special sweeper set, with being able to switch into Fire moves
Mamoswine @ Life Orb
Ability: Thick Fat
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Stone Edge
- Ice Shard
- Knock Off
A physical sweeper set, with Knock-Off and a priority move
Whimsicott @ Leftovers
Ability: Prankster
EVs: 248 HP / 252 Def / 8 Spe
Bold Nature
- Encore
- Leech Seed
- Giga Drain
- Stun Spore
A more fun set, just a staller while being able to switch into some Fighting and Dark moves
Crobat @ Black Sludge
Ability: Infiltrator
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Brave Bird
- U-turn
- Defog
- Cross Poison
A Fast sweeper, with Defog in case
Vaporeon @ Leftovers
Ability: Water Absorb
EVs: 224 HP / 252 Def / 32 SpD
Bold Nature
- Protect
- Wish
- Scald
- Heal Bell
And a Wish passer, while being able to take some solid hits
Any help or general tips would be great. Thanks