Keymaster

The keymaster is a character in Strife. He's inside a small room next to the entrance to the commons.

You can't enter his room until you've met the Oracle, in which it will say "take this token to the keymaster", which is referring to the Oracle Pass. Once back at the borderlands, ask the boy (keymaster) to give you the proper key so that you can make your way to the Bishop's fortress. He becomes irrelevant after that.