>- Weather: +6 [Sand, Hail]
- Items (Damaging): +5 [Sticky Barb, Black Sludge] This does not include Life Orb, which is recoiled after your move.
- Status: +4 [Burn, Poison] Confusion doesn't count.
- Items (Healing): +3 [Leftovers, Black Sludge]
- Abilities: +2 [Solar Power, Poison Heal, Rain Dish]
- Moves (Damaging): +1 [Fire Spin, Leech Seed]
- Moves (Healing): Normal [Aqua Ring, Ingrain]
Source