Does Shape Sand count as sand for the purpose of spells?
Because if it does, I have just found the greatest mount for an Ashanti.
Lots o' Shapesand+Awaken Sand=Fun Times.
Even more fun if you cast Black Sand every so often, to add 1d4 damage to your mount's attacks.
Which could be pretty much anything...
Say, what would be the LA of an Awakened Shapesand?