The Warden of Warlocks is just what it says. This is a magical chain that you can wear around the waist no matter how big you are. You can also wrap it multiple times around your neck if you prefer that.
You will walk among the most powerful warlocks in history and they will listen to you! You are the warden. I really don't know how this one was made but I know it had a lot to do with a blood magic and a secret ritual. What the ritual entailed I really don't know. I can come up with some things but I really don't and I'm sure you get my meaning on this. As you know as warlock is not white witch but they must listen to you and they do. Due to the nature of this piece I did test it constantly to make sure it wouldn't bring harm to the owner. It won't and it can't. The long chain acts a full protection even though it is not needed. It also binds them to you as long as you need them.
To call them to you you would call them by blowing on the square whistle. To send them back you would blow on the round one. Very easy and very simple. They must follow all your commands.
Knwoing what this can do it must be called a dual piece. I don't call it dark because even though it can do some serious dark shit it will also do all the good things you want done.