I'll quickly point out that something evil by nature as opposed to by, um... any other means is pretty specific, just so you know.

Anything involving Hidroroth(extremely dead) or his successor(currently believed to be dead, will not be relevant to this RP) is but those are pretty uncommon. The easiest path to lichdom, dullahans, and many methods of making mindless undead are as well.

So it's not like the spell can't exist, but I'm just making sure you know it's pretty specific in what it wards off. ^^;