War Cry
20% increased armor buff for the whole party is nice, but that is not the most important part of this ability. You will find out the hard way, that having resists is essential in inferno. Without resists, you will die. With Impunity rune, you will get HUGE boost to all of your resistances, depending on how much of them you have at the moment. Other runes seem useful, but in my opinion, resistances are the most important stat for barb in inferno. Thus, Impunity rune is just the best.
