So I made a 4x necro team and ran it to L6. Very easy to operate pets do great damage after giving them rusty weapons. I didn't even use the mana feed buff.

Then I made a 4x mage team lead by an enchanter. One word, rediculous. First pet at level 2 was air pet. Four air pets were blowing up everything they came across. If a mob was red I would toss in a nuke to finish them.

I am going to run a shaman and enchanter with the pet teams and expect to level them very quickly.