What's this RA build?

Hey I was in RA and I saw a Rt/A that completely owned my team I can't remember all the skills except a few. They are Nightmare Weapon, Horns of the Ox and Ancestor's Rage. Also the Rt/A caused knockdown and poison, and seemed the carry some ashes. So does anyone know what build it was?

Edit: I just vsed him again the skills are Nightmare weapon, horns of the ox, falling spider, signet of toxic shot, and grasping was korong, ancestor's rage and prob rez signet

He probably had spirit strength/brutal weapon.