Has anyone tried ray of frost on the ptr? If so, have you tried black ice rune and how easy/hard is it to make sure that mobs stay in or around the ice patch left on the ground? I would imagine that some mobs would be too fast and move too much for this to be that great of a build.
In any case, has anyone tried it yet on pTr ?
I would imagine you would need to work in Blizzard with 20% damage buff to make it viable + force weapon.