This NPC can be found in the following zones: (Click on Link to show map)
Elwynn Forest, Stranglethorn Vale, Dragonblight, The Storm Peaks, Utgarde Keep (1), Icecrown, Hillsbrad Foothills, Tanaris, Winterspring, Utgarde Pinnacle (2), Stormwind City, Ironforge, Blackrock Depths, Orgrimmar, Onyxia's Lair, Molten Core, Crystalsong Forest, Arathi Basin, Naxxramas (2), Nagrand, The Slave Pens, The Culling of Stratholme (2), The Nexus, Wintergrasp, Halls of Stone (1), Ulduar (1), Gundrak, Strand of the Ancients, Dalaran (2), The Violet Hold (1), Vault of Archavon (1), Trial of the Crusader (1), Trial of the Champion (1), Icecrown Citadel (3), Halls of Reflection (1), The Ruby Sanctum