Well, it wasn't Michael that killed your clan, then. Michael's slaughter was more of a demonically-empowered solo killing spree, that included some of the townspeople(As victims, not fellow killers).
Hee...this is taking me longer than I thought. Story of my life these days.
If it's not too late, I was thinking...perhaps a Beguiler, from PHB2?
They're not all that great at blasties though, so if the role of the Arcanist is intended to be launching fireballs, I'll go with a more traditional wizard or sorceror. Please be frank in assessing this, since it would be frustrating for me and everyone else if I couldn't live up to my needed role.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.