Please rate it, show me what I can improve and what I should fill my last pokemon slot with.
Note, I'm not finished making this team so movesets and EVs can be changed. I know some would need to breed for egg moves like leech seed and baton pass.
Milotic @ Levtovers
Ability: Marvel scale
EVs: Spd: 252/ Spa: 252/ Hp: 4
Role: Special defensive wall, good type coverage, able to recover, rain used for Yveltal and Helioptile. Rain powers up STAB hydro pump.
Helioptile @ Magnet
Ability: Dry Skin
EVs: Spa: 252/ Sp: 204/ Spd: 50/
Role: Special sweeper, heals in milotic's rain, able to spam powerful thunder's in rain, surf to deal with ground and fire types, volt switch to get out of tough situations.
Yveltal @ Sharp Beak
Ability: Dark Aura
Role: Mixed attacker, able to spam STAB hurricane in Milotic's rain
Blaziken @ Focus sash
Ability: Speed boost
EVs: Atk: 252/ Sp: 252/ Def: 4
Role: Sweeps, then baton passes to Ferrothorn
Ferrothorn @ Rocky helmet
Ability: Iron barbs
EVs: Atk: 124/ Def: 252/ HP: 130
Role: Physical wall, explodes when about to faint.
Extra slot, I'm not sure which pokemon should fill this. Any ideas? Thanks for reading, and please give feedback. Should I use aqua ring or recover on my Milotic, and should I use ingrain or leech seed on my Ferrothorn?