Try this guy.

Item: Leftovers
Ability: Synchronize/Inner-focus
Nature: Careful/Sassy
EVs: 200 Hp, 58 Defense, 252 S.Defense
Curse: Boosting
Wish: Healing
Protect/Payback: Stalling or Damage
Toxic/Payback/Heal-bell: Stalling or Damage or Team support
Also my Grotle set from the Torterra moveset question has proven to be excellent in the lower tiers.

Item: Evolite
Ability: Shell-armour
Nature: Relaxed
EVs: 252 Defense, 252 S.Defense, 6 Hp
Stock-pile: Boost those Defenses
Synthesis: Healing
Toxic: Status
Leech-seed: Passive and Healing