Executioner's Helm

I found this helmet on Howe's Knight at the end of the Human Noble's story. It has only dropped for me as a Warrior (not sure if it's unable to drop for Rogues). It usually takes me 15+ tries at getting it to drop but you can put it in the cache at Warden's Keep and it will scale in armor type as well. I still use it very late in the game. Also, it matches the Dragonscale set if you're one for asthetics.