Ok so my friend has always wanted to beat me, but never could. He's trying harder than ever and me, well not really. Anyways, he wants to battle me in triple team battles once he finishes his team, so this team is for competitive play. I also have little to no experience with knowing terms like "Sweeper" or pokemon of the sort, I'm still newer to the whole EVs and IVs, so no insults on why or why don't I have a sweeper in the team. I made this trying to *block out* as many weaknesses as possible without the use of legendary Pokemon. So anyone with suggestions?

Greninja(Male), Leftovers
Ability: Protean
EV: SpAttk 252, Spd 252, HP 4
Nature: Mild
Scald
Ice Beam
Extrasensory
Dark Pulse

Like I mentioned above, I don't really know about things like 'sweepers'. But I do know that this Greninja is fast, and doesn't rely on physical moves so it can hit ghost Pokemon. Dark, Physic, Fire and Flying shouldn't be an issue.
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Chandelure(Female), Leftovers
Ability: Flame Body
EVs: Spd 184, SpAtk 252, HP 72
Nature: Timid
Shadow Ball
FlameThrower
Psychic
Toxic

Chandelure was my next pick because it is ghost/Fire. It has a high SpAtk, but since it has a low Hp stat, I had taken away EVs from its Spd. Mainly what I would use him for is, depending on the pokemon(If anything Weak against Fire/Ghost/Psychic, then I would attack, but if not I would poison.)
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Hawlucha(Male), Leftovers
Ability: Mold Breaker
EVs: Hp 120, Atk 252, Spd 136
Nature: Adamant
Flying Press
Brick Break
Stone Edge
Dig

I wasn't really sure weather to use Heracross or Hawlucha. His main goal is to cover any Water, Fighting or anything with a weakness to Ground/Rock. His base Speed and Hp were good, but his attack was low. So that is where I put the most EVs.


So what do you guys think? Have any *constructive* suggestions? Comments? I didn't know what to use as far as items so if someone could help me with that, it would be highly appreciated