Reinforced Grand Regent's Gauntlets
This item can only be crafted by a player with Level 20 Platesmithing. The precursor item, [Grand Regent's Gauntlets], can be found in the Epic Dungeon Caverns of Karrundax, dropped when defeating Karrundax the Red during the Dungeon Delve event.
The tooltip for this item lists the Grand Regent's Armor twice as part of a 6-piece set. This is thought to be a typo.