In addition to what @Snarky said, War Mace has a number of stuns, which in combination with Oppressive Gloom will allow you to stun LTs and Bosses.
IMO I would drop Taunt, Boxing, Tough, Weave, Electric Fences, Spirit Ward, Mystic Flight, and Rune of Protection and replace them with Provoke, Intimidate, Invoke Panic, Unrelenting, Cloak of Fear, Oppressive Gloom, and either Combat Jumping+Super Jump/Superspeed or Hover+Flight/Super Speed.