I really like the Clockwork Paladin. I have one on my almost-legendary balance, and it's super helpful. Check the kiosk, and look for a Paladin that offers proof, defy, and some damage. Most are all resist pets, but every once in a while, you find one that adds a little damage. If you like, I can hatch with you. Mine has proof, defy, adds health, damage and I think accuracy, but I could be wrong about that one.
When creating any new wizard, regardless of school, it's safe to make a triple damage/double resist pet. Since there wasn't any information provided on if you're soloing or questing with a team, I'm going to assume you're trying to solo If that being the case, I would recommend pets that give a blade card or self utility. Ex.) Opossum, Enchanted Armament, Gobblerball and Rain Beetle
These are all really good pets going through the game since they will let you blade stack
If that being the case, I would recommend pets that give a blade card or self utility.