Tinkering around with immortal powers, trying to create a back-story for critters that millions of imaginary people worship and fear, is kind of a rush. Heh. And there's no worry about being too obscure. I'm mildly irritated that the rulebooks don't have anything to support fun and play or fertility, so a dionysis/pan/persephone figure you really have to stretch to create powers for them. I'll have to check the Big Book of Sex Magic to see if they have anything, but I'm trying to stay canon.
Was surprised to learn that there is a greek god of Malaria and fever, Febris, from whom the month of February is named.
The frustrating part--unless you make a campaign specifically about religion, this is a level of detail the party will never actually see. It's like writing six-page character backgrounds. Grumble.