From the Top.

[Laskeri]

I've been messing around with this team a bit. It has about a 4:2 W/L ratio so far on Pokemon Showdown, but of course I'm going to keep testing. Since I'm pretty new to this, pointing out any obvious mistakes would be appreciated :)
I'm gonna be honest, I didn't take into account a lot of the threats in the metagame when putting this team together, I've made a few changes from testing (I originally had MMawile instead of MKhan, and Talonflame instead of Klefki) and more changes will probably be made accordingly.

Jingle Jingle (Klefki) @ Air Balloon
Ability: Prankster
EVs: 252 Def / 252 HP / 4 Atk
Impish Nature
- Foul Play
- Light Screen
- Reflect
- Thunder Wave​

I feel like this doesn't need any particular explanation, from what I've seen it's pretty standard as far as Klefki goes (with Spikes and Toxic as other possible choices). Foul Play has saved my ass a couple of times, so I'm not sure if I want to switch it out with Toxic or not (because getting walled by Contrary Shuckle is not fun.)

Muse (Meloetta) @ Expert Belt
Ability: Serene Grace
EVs: 4 HP / 252 Atk / 252 SAtk
Serious Nature
- Close Combat
- Psychic
- Relic Song
- U-turn
​

Meloetta is one of my favorite Pokemon, all the better that she's usable competitively! I've found U-Turn to be pretty useful, I could be persuaded otherwise though. I know I should probably give her a better nature... But that's what my event Meloetta is, so if I ever want to use this team in the actual game I'll have to deal with it.

Gaia (Kangaskhan) @ Kangaskhanite
Ability: Early Bird (After MEvolving: Parental Bond)
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
- Sucker Punch
- Body Slam
- Earthquake
- Fake Out
​

Ah, Mega Kangaskhan. Definitely one of my favorite Megas, if not just for the awesome mechanic behind it. I don't think that I've ever run into a situation where I'd have needed extra damage of Return over Body Slam, and Earthquake works well in singles.

Ampere (Galvantula) (F) @ Life Orb
Ability: Compound Eyes
Shiny: Yes
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
- Sticky Web
- Thunder
- Volt Switch
- Bug Buzz
​

Aww yiss, my favorite arachnid got better. Although Sticky Web isn't necessarily as game-changing as Stealth Rocks or similar, I'm not a huge fan of entry hazards in the first place. LO'd Thunder is good when it goes off, and Bug Buzz can help deal with psychics that aren't faster than it.

My Self Confidence (Cloyster) (M) @ Life Orb
Ability: Skill Link
Shiny: Yes
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Shell Smash
- Rapid Spin
- Icicle Spear
- Razor Shell
​

Ah, self-deprecating humor. In all seriousness, Rapid Spin wins games, and Cloyster's really the only user that I can stomach. Of course Skill Link Icicle Spear is good as well, my only problem is his weaknesses are pretty common :(

Fluffy (Noivern) (M) @ Choice Specs
Ability: Infiltrator
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
IVs: 30 Atk / 30 SAtk / 30 Spd
- Boomburst
- Draco Meteor
- Flamethrower
- Air Slash​

I didn't like Noivern when I first saw it, but it's been growing on me. Noibat is too cute not to love, and the mane-like fur on it makes it seem a lot less threatening than it actually is. I'm sure Salamance is better, but getting around subs and wrecking face is fun. That being said Infiltrator might not be necessary. I'm also not good at using Choice items right yet.

Oh, and I'm largely doing this for the fun of it. I don't really care about ratings and such, it's just a plus if I happen to win (and the opponent isn't using un-fun gimmicks >_>).