If you don't mind spending a few crowns, my storm wiz has a lil siren thats helped her a lot. So far, it's at adult and has gotten may cast stormblade and critical striker. She was hitting criticals in marleybone!
If you don't want to spend crowns, I'd wait for your school's pets. I hadn't gotten that far on my storm wiz yet, though my other wizards' school pets have helped them out a bit, so perhaps the storm school pets'll be the same.