Maormer (Sea elves) live on the tropical island of Pyandonea and use snake magic to tame sea-serpents and are lead by the immortal wizard, Orgnum. Is that all we know about them?

I recall Orgnum had a enchanted Coffer that filled up with gold daily.

I want

Who is this Orgnum?

http://www.imperial-library.info/content/orgnum-king

They also had "chameleon-like" skin.

They have also attacked Summerset on many occasions, all lead by Orgnum. And they all end in utter defeat. Really, most of what we know about them stems from the 3rd edition of the PGE. I do have to wonder though, what they are up to over in Pyandonea. If I'm not mistaken, this is the longest interval between attacks on Summerset we have seen, the last one happening in the early 3rd era.