An idea came to me after seeing so many Inheritance, I noticed there are a distinct lack of decant Shades. Anyway the idea is that there is a shade stronger than all the rest and older than the dragon rider themselves. But In his creation her slew hundreds. When he finally came to his senses and saw the destruction and death he brought he vowed never to kill another living creature. Over the years he has taught many in the ways of magic, including to his dismay Durza. The idea is that Eragon and Saphira find this shade along with three other shades. Eragon rushes in an attempt to protect his realm (Don't feel like spelling it) After being defeated he eventually accepts his training (After learning about the shades past) The rules are quite simple. The story must take place after Eragon is trained by Oromis but before he fights against the king, though where exactly is up to whoever accepts the challenge