The Hydromancer is the 19th Epic Boss in the game and ran from March 27th, 2013 to April 2nd, 2013. If defeated 15 times the player can craft the Legendary Armor Hydromancer's Mantle. The Hydromancer drops Hydromancer's Focus.

The Hydromancer's Nemesis Finery is the Nemesis Armor for this epic boss, and will do 3x damage to the Hydromancer. It is available in the Dark Prince's Chest during this Epic Boss' reign.

Since the release of Heroic Mode, the Hydromancer can now be found at Writhing Cascades.