Recovery is really needed on CM arceus electric to set up on many special attackers even if you switch in against their hits.
Also I'm pretty sure you can set up to +6 against ferro and 2HKO unless it runs toxic
Gliscor (M) @ Toxic Orb
Trait: Poison Heal
EVs: 252 HP / 252 Def / 4 Spd
Impish...