Triumphant Gul'dan's Regalia is the upper rank of the Gul'dan's Regalia set, the Horde warlock Tier 9 set. Conqueror's Gul'dan's Regalia is the lower set, Triumphant Gul'dan's Regalia is the middle set. The Alliance equivalent of this set is Triumphant Kel'Thuzad's Regalia (heroic).