Prime material creatures do not have alignments. Clerics and Paladin's are infused with their gods power, so they do have the appropriate aura. One's personality is far too complex to so easily define.
Universalist wizards can spontaneously use any metamagic feat they may have without paying the extra level cost up to Universalist wizard level per day. Only one metamagic feat can be added per casting in this way.
Undead are not powered by the original inhabitants creatures soul. They are powered by "something else." Definitely not something good, but not the soul of the bodies previous inhabitant.
First level powers usable X+Stat times per day are At will instead.