I run Blizzard on a hail team (Tentacruel) just because it does a ton to Celebi. When sand is up it only has 70% acc, but is pretty reliable for me. I like to switch it out ice beam and blizzard. I usually don't use moves that are low accuracy unless I have to. I'll run rock slide as a 4th move on CS Terrak just because you don't know how many times a Volcarona has swept me because I've missed Stone Edge.