Here's what I've been running on Comfey and it's been working wonders.
Comfey @ Leftovers
Ability: Triage
EVs: 252 HP / 208 Def / 44 SpA / 4 SpD
Bold Nature
- Calm Mind
- Draining Kiss
- Leech Seed
- Synthesis
It can tank some physical attacks surprisingly well, and has Calm Mind...