Board Thread:Spoilers!/@comment-2153169-20151015134011/@comment-26006718-20151109233332

@Eskaver In last nights episode Merlin was bound to the sword in the same way as the dark one to the dagger. His name was emblazoned on it and Arthur controlled him the same way one controls the dark one. Now when the dark one dies WITH an heir(the one who killed them) they become the new Dark one and their name replaces their predecessor on the blade. If their is no heir the power is transfered to the vault where they can be resurrected. Now since the dagger and sword are in fact one object and they have been shown to share properties the ability to kill those who drank from the grail and control those same people. So if the name on the dagger marks one as The Dark One, and Merlin's name was emblazoned on the larger piece allowed the same effects then presumably all abilites would be shared correct? If so wouldn't the replacement of Merlins name signify the "changing of the guard" the same as the dagger?