If you go enchanting you can get +spell damage to your rings (i think it is +12). Enchanter can only enchant his own rings you cannot enchant someone else's rings. Enchanting is not the cheapest to lvl up too, the rods alone will cost you a couple hundred gold.

I have 2 teams and both of them went enchanting (4 sham, 3 locks and priest [don't have enchanting on one of the locks because she is 70 already and has alchemy maxed out]), and it wasn't cheap. Thank god my locks and priest has tailoring. It saved me a ton of money on mats.