Thank you for this -- it’s such a fun and fruitful setting. As a free-form magic system, Amberwrighting is fantastic. I love that I could potentially play my 21st century self suddenly washed up from the Mists of Time, or play a dinosaur riding on another dinosaur (or presumably a little dinosaur riding on a human), or an auroch ambassador in a raptor mech strider. The Egg-Tender role is really intriguing as well, and vaguely reminded me of Charlotte Perkins Gilman’s Herland, and a society where care and parenting are central to what people value and who they respect and listen to. (Problematic work in other ways, iirc ...)
I like the collaborative worldbuilding; the kind of rotating-GM mechanic; the way each neighborhood is rooted in a ‘heart’ NPC; and the roll-3d20-keep-two thing for Crises and Renewals.
Thank you for sharing!