There is no point in using Abomasnow when all of your pokemon get hit with Snow Warning. Use a Celebi instead, as your main aim seems to be Attacking and Seeding:
Celebi @ Leftovers
Nature: Bold
252 / 0 / 220 / 0 / 0 / 36
Ability: Natural Cure
- Leech Seed
- Psychic
- Recover
- Hidden Power...