I'm not shure if there are any just voodoo-based guilds, but the Tortugan Terrors have...1-3? Members who have a staff, and have about level 17 doll, if I am not mistaken.
You can PM their leader here:
PirateAhoy
(PirateAhoy is my freind, that is why I am refering you to him, and also, I have neglected playing in the game because I have Basic Access Syndrom...Get it? lol)
Hope you like it!