Great start. I love the builds. Especially the second one. I hope you keep this up and add more stuff later. Especially on the play-style for Off Tank [Grand Slam] build.

I don't have a lot of experience playing Muradin. So I am just wondering. Isn't Block better for longer survival in fights. Also won't Iron-forged Momentum give you better CC by reducing the CDs of Storm Bolt and Thunder Clap. And later Dwarf Toss, when you upgrade it with Heavy Impact. For some reason I can never land 3 attacks in a row, on the same hero, when trying to keep my teammates alive.

Again nice guide. I will make sure to try those builds soon.