Unseelie Seelie Fey

[Troacctid]

Is there a Dragon Compendium errata that covers these? Because if ghoulish, Unseelie, etc. were left un-errata'd when updated to 3.5, that should make the +0 LA a legit thing.

There isn't any errata for the templates' LA.

The Magister template doesn't have a sample creature that explicitly has a level adjustment of zero though, does it? It seems like that's the main distinction between Unseeley Fey and any other given LA - template, right? That Unseeley Fey has that explicit example? At least going off of the discussion in the thread.

No. The keystone of the ruling here is that if the template doesn't list a change to the base creature's LA, then the LA is the same as the base creature's. So an unseelie fey gnome is +0 because a gnome is +0; unseelie fey doesn't change it. An unseelie fey hobgoblin would be +1, not +0. Now look at the example bodak hydra. A normal hydra is LA: —. The bodak hydra is also LA: —. They're the same, which means the bodak template didn't change its LA. Therefore, by the exact same logic, the bodak template is also LA +0. As mentioned upthread:

The template specifically says to use the statistics of the base creature if not noted.