Prior to the Cataclysm, Avalanchion was part of the periodic Elemental Invasions. He spawned in Azshara amidst a host of rock elementals and was constantly escorted by Thundering Invaders.
His name comes from an avalanche which is a rapid flow of snow or rock down a slope, from either natural triggers or human activity.
He has an invisible Follower recruiting spell with the following description: Follower: Avalanchion — "Among the great Stone Lords of Deepholm, Avalanchion is known for being virtually indestructible. Avalanchion easily ignores mortal sensations such as fear and pain and will fulfill his master's commands with unyielding focus." The spell is associated to a buff that says "Avalanchion is a powerful Stone Lord who can guard his allies in battle and draw enemy attacks."
Speculation[]
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.