Spider
This NPC can be found in Auchindoun: Shadow Labyrinth (27), Ghostlands (19), Naxxramas (36), Ahn'kahet: The Old Kingdom (16), Auchindoun: Mana-Tombs (16), Howling Fjord (15), Zul'Aman (13), Pit of Saron (12), Utgarde Pinnacle (12), Tirisfal Glades (7), Utgarde Keep (9), Black Temple (10), The Culling of Stratholme (7), Drak'Tharon Keep (13), Zul'Gurub (6), Azjol-Nerub (10), The Forge of Souls (5), Icecrown Citadel (22), Violet Hold (4), Karazhan (29) and Halls of Reflection (3).