(2) Set: Archon gains the effect of every rune. (4) Set: Archon stacks also increase your Attack Speed, Armor, and Resistances by 1%. (6) Set: You gain 1 Archon stack when you hit with an Archon ability and Archon stacks also reduce damage taken by 0.15% and have their damage bonus increased to 100%.
Account Bound
"Vyr created his famed obelisk to gather the power of the Archon, a being he claimed existed on a different plane of reality. He is even reputed to have stored this macabre power in armor of his own design." —Abd al-Hazir