Rate my OU Stall Team

Replay of it in action: http://replay.pokemonshowdown.com/oususpecttest-197420739

Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 252 HP / 240 Def / 8 SpD / 8 Spe
Impish Nature
- Stealth Rock
- Earthquake
- U-turn
- Rock Slide

Heatran (M) @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 192 SpD / 68 Spe
Calm Nature
- Lava Plume
- Toxic
- Earth Power
- Roar

Sableye (M) @ Sablenite
Ability: Prankster
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
- Calm Mind
- Recover
- Dark Pulse
- Will-O-Wisp

Ferrothorn (M) @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 88 Def / 168 SpD
Sassy Nature
- Spikes
- Leech Seed
- Gyro Ball
- Power Whip

Chansey @ Eviolite
Ability: Natural Cure
EVs: 4 HP / 252 Def / 252 SpD
Bold Nature
- Wish
- Soft-Boiled
- Seismic Toss
- Toxic

Clefable (F) @ Leftovers
Ability: Unaware
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Moonblast
- Wish
- Protect
- Heal Bell