Propnomicon has discovered J.S. Sullivan’s Vanquish Fantasy Font, a pseudo-exotic calligraphic font that has a usefully indefinable air of ‘east of Alhazred’ about it. It’s only for “non-commercial use” though, so can’t be used for a comic, game or card-set — unless you first come to an arrangement with the font’s maker.
Looking through Sullivan’s DeviantArt gallery I see he has a similar script font, Banish, under the same license.
If you need free + commercial use then Font Squirrel is your main clearing-house and catalogue.