A Beastmaster who suddenly remembers that he's an OMNIVORE.
A Farmer.
What do you get when you cross a Druid and a Priestess?
To put it in polite terms, it's that friend or neighbor you probably have who buys only "natural" products.
What do you get when you cross a Druid with a Beastmaster with a Priestess with a Wizard?
CAPTAIN PLANET!
What do you get when you cross A Necromancer with a Warlord?
VOLDEMORT.
What do you get when you cross a Wizard with a Forcemaster?
You get knowledge AND intelligence!
Any other ideas? You can use combinations of mages I've already used if your idea is also weird, interesting, funny, or disturbing. Although try to keep the disturbing ones to a minimum, especially if they're not funny.
Post away!