Introduction: This is a team I have been trying to use in the Battle Frontier. It is for every facility except for the Hall and Factory. I usually use it in the Castle, but I use it in the other two, also. The team is a sweeping/power team. I don't rely on stalling except for the start of the battle.
The Team:
Articuno @ Leftovers
Quirky Nature
Agility
Ice Beam
Toxic
Roost
Articuno is my lead. He attacks with Ice Beam, and if a Steel Type comes out, switches out to Azumarill. Agility is when a Pokemon switches out. He can out speed a lot of Pokemon with plus 2 speed. He have problems with Rock type moves, but if I detect a rock type move, I can switch out to Azumarill, who can take the hit.
Sparky (Pikachu) @ Light Ball
Timid Nature
Focus Punch
Grass Knot
Substitute
Volt Tackle
Pikachu comes in as a type of revenge killer after Azumarill or Articuno faint. He has good type coverage, and Light Ball doubles his attack, destroying a lot of Pokemon. I sub up, then if its not broken, Focus Punch. Volt Tackle, FP, and Grass Knot provide great type coverage. This guy can be a beast in the middle of the game.
Azumarill @ Choice Band
Adamant Nature
Aqua Jet
Double-Edge
Waterfall
Superpower
Azumarill helps out at the end of the game usually, and cleans up. Even if an attack is resisted, every attack of this Pokemon will destroy weakened Pokemon. This Pokemon really has helped me when the going gets tough. Even defensive Pokemon like Steelix can't take too many hits from this Pokemon. I could not win without this Pokemon.
Thanks for reading. I will take any suggestions.
The Team:

Articuno @ Leftovers
Quirky Nature
Agility
Ice Beam
Toxic
Roost
Articuno is my lead. He attacks with Ice Beam, and if a Steel Type comes out, switches out to Azumarill. Agility is when a Pokemon switches out. He can out speed a lot of Pokemon with plus 2 speed. He have problems with Rock type moves, but if I detect a rock type move, I can switch out to Azumarill, who can take the hit.

Sparky (Pikachu) @ Light Ball
Timid Nature
Focus Punch
Grass Knot
Substitute
Volt Tackle
Pikachu comes in as a type of revenge killer after Azumarill or Articuno faint. He has good type coverage, and Light Ball doubles his attack, destroying a lot of Pokemon. I sub up, then if its not broken, Focus Punch. Volt Tackle, FP, and Grass Knot provide great type coverage. This guy can be a beast in the middle of the game.

Azumarill @ Choice Band
Adamant Nature
Aqua Jet
Double-Edge
Waterfall
Superpower
Azumarill helps out at the end of the game usually, and cleans up. Even if an attack is resisted, every attack of this Pokemon will destroy weakened Pokemon. This Pokemon really has helped me when the going gets tough. Even defensive Pokemon like Steelix can't take too many hits from this Pokemon. I could not win without this Pokemon.
Thanks for reading. I will take any suggestions.