how about planeshift has one religion, and this religion is polytheistic, consisting of many gods for different things, and you can worship/pray to these gods and in return, something would happen to your character reflecting what god you worshipped, and maybe for warriors, you have a symbol of a god of war, fighting, or strength on your sword or shield or something, and it makes you stronger in some way, its sort of a way to have special weapons like \"this is no regular sword, it has the symbol of Rahazar the god of war and strength engraved on it, it will bring you good fortune in battle\" or something of the sort.