Cthulhu

Hello I've decided that I want to make a new character on an RP server. I've also decided that I want him to be a member of the Cult of Cthulhu. However I can't decided what's the best class or server. So i just wanted some suggestion. For classes I'm tied between mage and warlock. Warlock fits well, but Ice Mages Element kind of fits Cthulhu's sea theme. Also does anyone know a RP sever with a good H.P. Lovecraft community? Thank You.