Dean is a vessel for Sam's sword
Hi everyone! I'm looking for a Sam/Dean fic. In the fic Sam is the warrior who is supposed to fight the apocalypse. Dean is the vessel for the sword that Sam will use to accomplish this. That is, when the time comes Sam will pull a sword out of Dean and use it to fight in the apocalypse. I believe at some point in the fic Dean goes into a sort of trance and tells Sam that he carries his sword, and that the fic also had Bobby and Castiel in it, but I'm not absolutely sure. Sorry, I know it's pretty vague, but that's the most I remember in terms of details. I would really appreciate it if anyone knows what I am talking about and could link me to it.