Flying Sheep On Fire
The Flying Sheep On Fire can be found on The Dungeons of Dalaran map. Kael'thas and Vashj activated a secret level by stepping on platforms to say, "Bah-Ram-Ewe". These were marked off by special sheep, the Blood Sheep, Inner Sheep and Cold Sheep, in that order from bottom to top. A door then opened, leading to a circle of Flying Sheep on Fire, which activated the secret level called The Crossing.