Heroic Mercurial Vestments and Heroic Mercurial Regalia
Heroic cataclysm raids
Requires a full raid group
You have to already own the regular version of this set before you can upgrade it to the heroic version using the tokens that drop from heroic raid bosses. You can also use Essence of the Forlorn to purchase any of the tier tokens. Your set can be upgraded at Magatha Silverton in Stormwind City or at Gunra in Orgrimmar.
Where to get set items