Alright, before I start, can I say that there will be no Porygon 2 in this team because I accidentally sold the Evolite. I know. Shocking... This team is made purely from Gen 6 as this is the Gen I started playing competitively, so there will be no Gen 5 move tutor moves below. Thank You!
1. Mamoswine @ Focus Sash (Lead)
Ability: Thick Fat
Nature: Brave (+Attack -Speed)
EVs: 252 Attack / 128 Defense / 128 SP Defense
-Stealth Rock
-Ice Shard
-Icicle Crash
-Earthquake
2. Cofagrigus @ Leftovers (Mixed Wall + Tank + Trick Room + BEAST)
Ability: Mummy
Nature: Relaxed (+Defense -Speed)
EVs: 252 Defense / 252 SP Defense / 4 HP
-Will-O-Wisp
-Shadow Ball
-Calm Mind
-Trick Room
3. Reuniclus @ Leftovers (Special Sweeper + Trick Room)
Ability: Magic Guard
Nature: Quiet (+SP Attack -Speed)
EVs: 252 SP Attack / 252 HP / 4 SP Defense
-Energy Ball
-Shadow Ball
-Psyshock
-Trick Room
4. Mandibuzz @ Leftovers (Mixed Wall)
Ability: Overcoat
Nature: Careful (+SP Defense -SP Attack)
EVs: 252 Defense / 252 SP Defense / 4 HP
-Toxic
-Roost
-Knock Off
-Foul Play
5. Conkeldurr @ Flame Orb (Physical Sweeper)
Ability: Guts
Nature: Adamant (+Attack -Speed)
EVs: 252 Attack / 252 HP / 4 SP Defense
-Power-Up Punch
-Facade
-Stone Edge
-Earthquake
6. Blastoise @ Blastoisinte (Special Sweeper)
Ability: Mega-Launcher
Nature: Quiet (+SP Attack -Speed)
EVs: 252 SP Attack / 128 Defense / 128 SP Defense
-Rapid Spin
-Water Pulse
-Aura Sphere
-Dark Pulse