I'm a bit new to the metagame so I'm not necessarily sure what to look for as far as the oppositions pokemon and or moves. I've been using this team because a few people on other sites noted that they would work together (a few of them also happen to be my favorites), however I'm having trouble utilizing a good strategy with them.
Forretress (Lead)
Earthquake
Explosion
Rapid Spin
Toxic Spikes
EV Spread
HP: 252
Atk: 112
Def: 144
Nature: Relaxed
Ability: Sturdy
Item: Leftovers
Breloom
Focus Punch
Leech Seed
Substitute
Spore
EV Spread
HP: 44
Atk: 252
Spe: 212
Nature: Adamant
Ability: Effect Spore
Item: Toxic Orb
Infernape
Flamethrower
Grass Knot
Nasty Plot
Vacuum Wave
EV Spread
Atk: 64
Spe: 192
SpcA: 252
Nature: Naive
Ability: Blaze
Item: Life Orb
Mamoswine
Earthquake
Ice Shard
Stone Edge
Superpower
EV Spread
Atk: 252
Def: 4
Spe: 252
Nature: Jolly
Ability: Snow Cloak
Item: Choice Band
Blissey
Flamethrower
Protect
Wish
Toxic
EV Spread
Def: 252
SpcA: 80
SpcD:
Nature: Calm
Ability: Natural Cure
Item: Leftovers
Scizor
Brick Break
Bullet Punch
Pursuit
U-Turn
EV Spread
HP: 248
Atk: 252
Spe: 8
Forretress (Lead)
Earthquake
Explosion
Rapid Spin
Toxic Spikes
EV Spread
HP: 252
Atk: 112
Def: 144
Nature: Relaxed
Ability: Sturdy
Item: Leftovers
Breloom
Focus Punch
Leech Seed
Substitute
Spore
EV Spread
HP: 44
Atk: 252
Spe: 212
Nature: Adamant
Ability: Effect Spore
Item: Toxic Orb
Infernape
Flamethrower
Grass Knot
Nasty Plot
Vacuum Wave
EV Spread
Atk: 64
Spe: 192
SpcA: 252
Nature: Naive
Ability: Blaze
Item: Life Orb
Mamoswine
Earthquake
Ice Shard
Stone Edge
Superpower
EV Spread
Atk: 252
Def: 4
Spe: 252
Nature: Jolly
Ability: Snow Cloak
Item: Choice Band
Blissey
Flamethrower
Protect
Wish
Toxic
EV Spread
Def: 252
SpcA: 80
SpcD:
Nature: Calm
Ability: Natural Cure
Item: Leftovers
Scizor
Brick Break
Bullet Punch
Pursuit
U-Turn
EV Spread
HP: 248
Atk: 252
Spe: 8