I’ve been working on this one for a while, and I’m happy I’ve finished it in time for the release of Dune 2!
The Ashworm Dragoon was a prestige class in DnD 3.5, meant as a “mundane” (as in, non-magical) special mount for fighters.
The two main hurdles when writing this class was finding a way to have the ashworm come back to the player in the event of death (most familiar subclasses in the game don’t have this problem, as the character has spell slots to heal/resurrect their faithful friend) and balance the burrowing speed of the ashworm (I actually found that the rules are a bit more restrictive than I thought, and I’ve added a few more to prevent strategies that the players could employ to cheese encounters using their burrowing speed).