Just an idea, but how about a spell called Omnihelix that deals helix damage according to the weather effect you have, but it would deal double the damage normal helix spells normally do plus a burn or drown effect in respect to the elemental damage you deal.

I'm not sure if this idea has been on the forums yet. I really don't jump on the sch forums much. Anyways, sch needs more spells I feel.