Best Possible Team out of these 13 Pokémon?!

[Ptyler317]

I made a list of my 14 favorite Pokémon, and I'm trying to figure out the best team possible out of them. I know it won't be the best team in general, but it would just be a team that I could use in-game. Any help would be appreciated!
My Pokémon are:
Blastoise
Gengar
Snorlax
Dragonite
Tyranitar
Swampert
Altaria
Flygon
Wailrein
Rayquaza
Empoleon
Luxray
Lucario
Gallade

 

[Cid]

Mega Gengar @ Gengarite
- Shadow Ball
- Sludge Bomb
- Thunderbolt
- Ice Beam

Tyranitar @ Rockium Z
- Rock Slide
- Crunch
- Earthquake
- Ice Punch

Rayquaza @ Life Orb
- Dragon Ascent
- Dragon Claw
- Earthquake
- Extreme Speed

Snorlax @ Wiki Berry
- Return
- Earthquake
- Fire Punch
- Recycle

Swampert @ Leftovers
- Waterfall
- Earthquake
- Ice Punch
- Superpower

Lucario @ Black Belt
- Aura Sphere
- Flash Cannon
- Psychic
- Vacuum Wave

That's how I would go about your 14 Pokémon, if I were to make a team of 6 to use in-game.