Realms help applicable?

[Grams]

I'm playing in a 3.5 FR campaign. Would stuff from this site be considered RAW or subject to DM approval?

http://www.realmshelps.net/index.shtml


More specifically: http://www.realmshelps.net/monsters/templates/swarmshifter.shtml

I assume it would be in Sand Storm but I can't find the template within it.

[Silva Stormrage]

Usually that site is good but check the book its from to make sure its not from dragon magazine or something. Swarm shifter is from Libris Mortis