Rot Eater

''With every touch from God there are blessings and burdens. On the one hand, no food of your companions shall ever go to waste; but on the other, you may find that they prefer not to eat with you anyway.''

You can only eat decaying or rotting food. Fresh or cooked food will make you sick in the same way that rotting food would to a normal diet. You can smell corpses from a great distance, but the smell of rotting flesh follows you everywhere you go.