You have some really cool ideas here! I think there are a few things that could be worded a little more clearly. It took me quite a while to realize the Festival was a clearing similar to the Burrow, but I think that's a really cool mechanic. I also didn't quite understand Lost to Violence, but I think I get it now. It's a way for enemies to remove their warriors from the Festival when the Revel token is undefended which I think is really clever. Succumb to the Revel is also a little hard to understand on first glance.
But all in all some really creative theming! Nice work!