Quote Originally Posted by illyahr View Post
Well let's start with the Corrupted template from the Book of Vile Darkness. Boosts to Str and Con with minor penalties to Dex, Wis, and Cha. Boost to natural armor, scaling DR with HD, damage dice of natural attacks increases one size with partial vile damage, fast healing, increased DC for special attacks. All with scaling CR from +1-3 based off of HD.

All with no listed Level Adjustment. Not LA: -, it doesn't even have a Level Adjustment entry.
I think that this is one of the reasons for the disclaimer at the beginning of the book. The one called "HIDE THIS BOOK!" which says that the book is for DMs only.
As if that ever stopped anyone...