Weird... "Trying to" got deleted from the title.
So I decided I actually wanted to go back and actually play through some of Oblivion, and do most of the side quests. I started up a Mage character because I normally always play a melee character. The first thing I decided to do was knock out the Arena quests. I made it up to Gladiator rank and it's getting a bit brutal only using the basic fire attack, summon skeleton, and the basic heal spell. So I set out for the Mage's guild and bought a more powerful Fire spell, a Lightning attack, and a better heal. But it's sucking my mana dry. Are there any spells that would work out better or equipment that would boost my mana? Currently using the light Arena armor and a leather helmet.