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