building a competitive team

[geetry]

so I've wanted to get into competitive play, and I've built myself a team for singles. Tell me if anything seems wrong, out of place, or abilities should be swaped. I also have no idea what to do for EV's so if someone could help me with deciding those that'd be great. And if someone can make suggestions to those undecided items, thank you :D

Espeon @ undecided
Ability: Magic Bounce
- Shadow Ball
- Dazzling Gleam
- Calm Mind
- Psychic

Noivern @ Rocky Helmet
Ability: Frisk
- Air Slash
- Roost
- Dragon Pulse
- Boomburst

Nidoking @ undecided
Ability: Rivaliry 
- Earthquake
- Poison Jab
- Ice Beam
- Thunderbolt

Arcanine @ Life Orb
Ability: Intimidate 
- Flare Blitz
- Wild Charge
- Close Combat
- Extreme Speed

Mega Ampharos @ Ampharosite
Ability: Static/Mold Breaker
- Thunderbolt
- Dragon Pulse
- Power Gem
- Focus Blast

Lanturn @ Leftovers (I want him to be bulky if possible)
Ability: Volt Absorb
- Thunderbolt
- Scald
- Ice Beam
- Aqua Ring