Quote Originally Posted by ajx View Post
It only appeared in the events shop for players that have completed the quests, as far as I know.
That is the calamity savager. There was another NPC that would appear during seasonal events to sell you items of past seasonal events of the same type (ie during the Moonfire Event, you could buy from him the items from past Summer events, during Christams, past Christas events items, etc.)