Check out the full Tyrant set stats posted by Lokax. IMO sets obtained by RvR should be geared towards PvP and sets obtained in PvE dungeons should have bonuses on them towards PvE. I wonder why a PvE obtained set has a parry bonus on it tbh. The set bonus from the Tyrant gear is as follows: There is another set called The Warmonger of Sakhmet, consisting of four jewelry items and The Squigplate of Sakhmet (maybe THE cloak)? I wonder if we'll ever see the kind of cool cloak he wears - with some kind of standard on his back. Judging from a bunch of Tyrant armor screenshots at Gaarawarr Gabs, the Orc questgiver inside the Expedition Camp wears the full Black Orc Tyrant set, which you can see on the screenshot. Good stuff! The Tyrant set does not award any wards btw. If this works correctly it means less sharded loot and more item joy for the party members.

Seems the drop itself is a repairable item more then one class can use. The rest of the set seem to drop from the bosses inside the Tomb of the Vulture Lord and have a 50% chance to drop from the bosses there. Two of the set items you can buy at the vendor inside your Expedition Camp with some kind of mask currency (from the tomb of the vulture lord i guess). With the Land of the Dead came some new gear and also a new armor set: Tyrant's War Boyz' Kit.

Warhammer online chosen armor