Can someone explain Sadhu?

I understand the base of the class, but I remember reading that it apparently got butchered with attack speed nerfs and something about a tile double damage nerf? The only thing I could find about that is [this](https://www.youtube.com/watch?v=T3ec8DsJ5D0).

Also, what is the state of the class now? It looks really neat, and like one of the few classes that could actually utilize the Wizard Blade.