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