Kadabra: Lead and Last Resort
Nature: Timid
Ability: Synchronize
Item: Choice Specs
EVs: 252 Speed, 252 Sp Attack, 6 Sp Def
IVs: 0 Attack
Energy Ball: Type Coverage
Psychic: Powerful STAB attack.
Shadow Ball: Type coverage.
Signal Beam: Further type coverage.
Magneton: Electric Sweeper and Steel Trapper
Nature: Quiet
Ability: Magnet Pull
Item: Leftovers
EVs: 252 Def, 252 Sp Attack, 6 Sp Def
IVs: 0 Attack, 0 Speed
Charge Beam: A way to increase Special Attack, and also damages the foe.
Flash Cannon: STAB
Substitute: Protection from Status.
Thunderbolt: Powrful STAB attack.
Dusclops: Wall and Trick Roomer
Nature: Relaxed
Item: Leftovers
EVs: 6 HP, 252 Def, 252 Sp Def
IVs: 0 Attack, 0 Speed
Confuse Ray: Further stalling and damage.
Pain Split: Great way to heal Dusclops while damaging a switched in foe.
Trick Room: This is a Trick Room team.
Will-o-wisp: Further damage and stalling through weakening Physical attacks.
Rhydon: The Sweeping Tank
Nature: Brave
Ability: Lightningrod
Item: Choice Band
EVs: 6 HP, 252 Attack, 252 Def
IVs: 0 Speed
Aqua Tail: Type coverage.
Earthquake: Of course.
Megahorn: Type coverage.
Stone Edge: Again, of course.
Porygon2: Fast Special Tank and Trick Roomer
Nature: Sassy
Ability: Trace
Item: Leftovers
EVs: 6 Def, 252 Sp Attack, 252 Sp Def
IVs: 0 Attack, 0 Speed
Ice Beam: Always great type coverage.
Recover: Great reliable healing move.
Tri Attack: STAB.
Trick Room: This guy is a Trick Roomer. More than one is needed for a good Trick Room team, and although three is great, I can make do with two with such good defenses.
Shelgon: The Dragon
Nature: Brave
Item: Choice Band
EVs: 6 HP, 252 Attack, 252 Def
IVs: 0 Speed
Brick Break: Type coverage and also screen breaking.
Crunch: Deals with Psychics and Ghosts who might choose to undo Trick Room.
Double-Edge: Powerful attack with no recoil thanks to Rock Head.
Outrage: Who cares if I'm stuck with one move? I have Choice Band! All shall perish to Outrage!