Mojh should probably just have some Draconic-sounding name, since they've abandoned their human heritage to become something more draconic in power and form. Likely a kinda-long name that makes them seem grander or more intimidating.
As a magister, you'll have to be careful at the lower levels. Same goes for oathsworn and greenbonds, as well as some witches, runethanes, and mage blades (depending on what they choose to learn/focus on). Low-level spells are fairly weak in combat with AU/AE, especially the 1st-level spells. They tend to require normal melee or ranged attack rolls (or a touch attack in some cases), rarely saving throws. There are a few exceptions (fire burst for instance, IIRC), but generally, you'll likely want to put a good score into Dexterity (also, IIRC, it's tougher to accumulate AC bonuses as a caster in AU/AE, so high Dex is even more important).
You won't be doing much damage in combat until you gain 3rd-level spells or higher, when you'll be able to contribute similarly to the party's warmain or totem warrior or champion (perhaps; you may still be a bit behind until 4th or 5th level spells). But then, as a spellcaster, you'll likely be more versatile outside of combat. You may or may not want to take Simple Weapon Proficiency as a feat, for the sake of getting a heavy crossbow and making the most of it. Point Blank Shot and Precise Shot are possible feat choices too.
