Lead/Spiker
Frosslass
@Focus Sash
Ability: Snow Cloak
EVs: 4 HP / 252 Sp Atk / 252 Spe (Timid)
~ Ice Beam
~ Spikes
~ Taunt
~ Destiny Bond
Bascally Frosslass's only purpose is to set up spikes and then take someone down with her when she dies. Taunt is there for those who want to try to status Frosslass, or set up their own entry hazards, and Ice beam is there in case Frosslass gets taunted herself, or just to kill things weak to Ice Beam
Staller
Jellicent
@Leftovers
Ability: Water Absorb
EVs: 252 HP / 80 Def / 176 Sp Def (Calm)
~ Surf
~ Will-o-Wisp
~ Recover
~ Protect
This one is kinda of a no-brainer. Surf for killing fire types (who are immune to will-o-wisp) and as a STAB move. Will-o-Wisp burns things. Recovers heals, and protect stalls out leftovers recovery and burn damage. Jellicent also acts as a great switch in to any water attacks I predict coming my way.
Special Attackers
Hydreigon
@Choice Scarf
Ability: Levitate
EVs: 4 HP / 252 Sp Atk / 252 Spe (Modest)
~ Dark Pulse
~ Draco Meteor
~ Fire Blast
~ Focus Blast?
Dark Pulse and Draco Meteor are there for STAB moves. Fire blast to kill the ever common steel types. Focus Blast I'm not sure of. It takes out stuff like Tyranitar or Heatran but many times I lose games due to it missing,thus making me sometimes rather use Surf. Hydreigon normally has only ok speed for today's meta, so he carries a Choice scarf to solve that issue, which has saved me many times. H
Magnezone
@Wise Glasses
Ability: Magnet Rise
EVs: 76 HP / 252 Sp Atk / 180 Spe (Modest)
~ Thunderbolt
~ Flash Cannon
~ Hidden Power (Fire)
~ Signal Beam
Thunderbolt and Flash Cannon serve as reliable STABS, signal beam takes out grass, psychic, and dark types, and especially murders celebi. Hidden Power fire makes Magnezone the steel killer of my team with magnet pull. I see an annoying Scizor or Ferrothorn? I just send in Magnezone and kill them with HP Fire.
Physical Attackers
Mienshao
@Life Orb
Ability: Regenerate
EVs: 4 HP / 252 Atk / 252 Spe (Jolly)
~ Fake Out
~ Hi Jump Kick
~ U-Turn
~ Taunt
Lol, flinch and flee fun. Carries Life Orb to hit hard. Hi Jump Kick serves as a STAB move, which does a great job at decimating anything weak to it. Taunt is there for anything that wants to try and status Mienshao, or for annoying stuff like Whimiscott. Life Orb works perfectly with Mienshao thx to his ability Regenerate.
Garchomp
@Choice band
Ability: Sand Veil
EVs: 4 HP / 252 Atk / 252 Spe (Jolly)
~ Earthquake
~ Outrage
~ Stone Edge
~ Fire Fang
Garchomp is my prime hard hitter. This is the typical choice band garchomp set. Earhquake and Outrage for STAB blah blah blah. Stone edge for flying and Ice Types. Fire Fang for Steels.