Terevalis Unctio of House Mysti wrote:
Will the mammoth rider be available soon?
I don't know if there's a mammoth animal companion, but there is the indomitable animal companion advancement that's available to you if you are from the land of the mammoth lords.
I think the indomitable companion only grows to large in size but thematically it is a great and fearsome beast, so why not a mammoth?
I do agree that it would be cool to have some sort of archetype that deals with "prehistoric" savage animals as mounts in general.