Maxilan Carth, the Hunter of the Bayous, was the bane of the gatorfolk in life. To those who follow Jampiri, he provides protection from those beasts from beyond the grave.
The teeth and fingerbones of holy men and more
The Road to the Hundred Angels
Pick up a pathology/microbiology book, and add the diseases/syndroms to your game. Your players will freak out.
Coughed at? Diphteria. or tuberculosis?
Drunk from a muddy stream? Or just walked through? Well, let us introduce you to schistosomiasis...
Hit by a stream of energy? Too moch mana is ust like too much radioactivity - perhaps all mages could develop cancer early if too powerful...