I found a glitch- if you an element changing item on a hero, do a quest, and then put another element changing item on that same hero without taking the first off, and go into the screen to start a quest, the hero's origional element will be changed to the element of the first item.
 "Arkandian Crusade"){kind=icon}
 "Protector IV"){kind=icon}
 "Learn to Fly"){kind=icon}