This is a Control Warrior w Prince Malchezaar Deck list. Control Warrior fans were waiting for Prince Malchezaar to try out in their lists, the 5 extra cards go a long way to keeping fatigue at bay.
You are getting random legendaries, but much like Elise Starseeker there is a very good chance you’re going to get some really good cards. Plus, the element of surprise for your opponents usually works out in your favor.
Give the list a try and see what legendaries you get.