Elder Scrolls 4: Oblivion Message Board  

Ok, I will let you in on a lil trick
Join the mages guild and do all the missions till you get acces to
that Arcane University thingy. Since you're this persistant, doing
the application missions won't be a problem for ya
Anyways, when you get to the Arcane University, get a nice weapon, some full soul gems and enchant the weapon with soul trap. That way, it's much easier than casting the spell all the time

Umbra already has that enchantment.

I tried Umbra but I think I can only use Soul trap enchant for 500+ uses,
But attack power is way too much!