Quote Originally Posted by zergling.exe View Post
It does wonky stuff with epic rules, so it's easier to prevent problems by not allowing negative LA. There is at least one template that provides negative LA - Incarnate Construct.
ELH has several monsters with negative LAs. They don't outright say LA: -8, but they do list ECLs to play them that are less than their RHD. A protean, for example, is ECL 36, but has 44 RHD.