Mega Lucario, (please help me)

[SuperSableye]

Hey, I'm new, and i probably do not know anything about competitive battling. I'v red quite a bit about it, and I love battling, but I always suck ) :. So anyways, I decided to read a little about the metagame, and I tried making this team, and I have won some games on Pokemon Showdown, but it still is not that good. I don't really know the strategy of this team, but i guess it is Brute Force and Coverage. Anyway, any help would be greatly appreciated, so Here is my team. Maybe it wont suck? (all pokemon have 31 IVs in all categories)

Lucario @ Lucarionite
Ability: Steadfast
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Close Combat
- Bullet Punch
- Ice Punch
- Swords Dance

Again, Mega Lucario has to be one of the Best pokemon in the Metagame, Even though it is so frail. The moveset has given me some trouble, and I had to make the decision between Special and Physical, but this moveset has been working out quite well. I have not clue what Lucario's ability should be though, as I don't like justified on a x4 resistant dark moves, and I'm sure people aren't stupid enough to use Crunch on Lucario.

Greninja @ Expert Belt
Ability: Protean
EVs: 252 Spd / 252 SAtk / 4 Atk
Hasty Nature
- Dark Pulse
- Hydro Pump
- Ice Beam
- U-turn

Protean Greninja is nearly unstoppable, along with its nearly-perfect typing. I found someone who recommended this moveset on this sight, and it has worked great for me, having nearly perfect coverage. I have no clue what to use as Greninja's item, but Expert Belt definitely seems like the best choice

Garchomp @ Yache Berry
Ability: Rough Skin
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Earthquake
- Dragon Claw
- Rock Slide
- Swords Dance

I considered using Mega Garchomp, but its x4 ice weakness is just SO crippling. Still, this Garchomp is normally surviving for about three turns, and dealing a large amount of damage too. Rock slide is such a helpful move, and earthquake is nearly unstoppable, but i never have liked Draco Meteor, so i decided to use Dragon claw.

Aegislash @ Leftovers
Ability: Stance Change
Shiny: Yes
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
- Shadow Sneak
- Iron Head
- Sacred Sword
- King's Shield

This moveset took me so long to settle upon using, but it seems to be working out fine. I considered using a Life Orb instead of Leftovers, I have tested both, and i Still cannot decide which one is best. Even so, I don't really know when its best to use this pokemon in battle, as I rarely use it, but it is just SO good.

Talonflame @ Charti Berry
Ability: Gale Wings
EVs: 252 HP / 252 Atk / 4 Spd
Jolly Nature
- Brave Bird
- Flare Blitz
- U-turn
- Thief / Hidden Power Electric

This has truly been one of the best pokemon on this team, but I have no clue what its fourth move should be. Frankly, I still cannot decide on the item, or where to put the four EVs in speed or defense/special defense. The Charti berry doesn't seem to do much, but I might switch to Flying Gem, I really don't know.

Metagross @ Assault Vest
Ability: Clear Body
Shiny: Yes
EVs: 252 Atk / 248 HP / 8 SDef
Adamant Nature
- Meteor Mash
- Earthquake
- Ice Punch
- Zen Headbutt

Metagross is definitely VERY underrated, nearly perfect typing, and a defensive wall (somewhat) with assault vest. Again, its moveset needs work, but I know due to assault vest, I want 4 moves for damage and great coverage.

 

[SuperSableye]

like what, because I know i want to stay away from legendaries, which is pretty much the whole ubers tier. well unless there are any legendaries allowed in nentendo wfc singles, (yes i know blaziken is ubers, I die to much to Earthquake though)

 

[Ununhexium]

Yeah but blaziken doesnt need to take equake because it can outspeed pretty much every user of it :P On lucario, you will probably want to run justified as it can switch into a dark move (with its nifty 4x resistance), nab a quick boost, force out their pokemon while using swords dance, then proceed to sweep as 112 is a very nice speed tier in ubers.

On talonflame you definitely want Adamant nature. it outspeeds pretty much all pokemon anyways and has gale wings to boot so the extra speed isnt necessary.

on another note, you can use http://play.pokemonshowdown.com/ to easily make and battle teams with no banlist on Ubers (except for clauses). WFC Ubers doesnt really work so I would recommend Showdown

 

[SuperSableye]

What about the movesets, and Talonflame's 4th move,

 

[haxiom]

OK. Here we go.

I'd stray away from Aegislash in this case, as you already have Mega Luke + AV Metagross to check Xerneas. Overall the team falls to WAY too many common ubers threats, so fill this slot with something that can actually beat Ekiller. Or Kyogre. Or Ho-Oh. Or Yveltal. Or Zekrom...

Anyways, optimization on current mons. For Lucario, I'd run an AoA > SD sweeper in Ubers, since it really lacks opportunities to set up. Iron Tail > SD to hit Xerneas, since you need it to get the KOs you want (though Metagross should be your first switch-in).

For Greninja run LO. idk about the set but it looks alright.

Garchomp could run a different set, but I don't really see what it does for this team. Use something like Palkia if you want a dragon, it will help patch up Kyogre weakness. Or a scarf set although it's redundant with Talonflame.

Aegislash, I mentioned above. If you want to keep him, remove Metagross and run SDef Aegislash.

Talonflame is an interesting choice in Ubers; Run CB or Sharp Beak and run Roost or Tailwind or something for the last slot.

Metagross is a cool Xerneas counter, BP > Zen Headbutt.

I'd strongly look into having answers to many common threats or else you will not do so well.

Good luck!