I share Silveressa's opinion, it's great for new players and seasoned veterans alike.
Instead of being the starting point for the PC's venture, it could be introduced pretty much anywhere throughout the course of a campaign.
Brilliantly written, excellent presentation.
5/5 for you sir!
A neat little bunch.
I can imagine the Mage of a low level party starting out with a stonepal, with the joker of the party occasionally making a switch here and there. That would have been what a previous set of players I had would do. You cannot have a game without a touch of humour!