The first mystic I've played. This was back when mystic was still Unearthed Arcana and I pulled a race from tomb of beasts to avoid playing a humanoid. I try to play the most non-human I can in games for reasons.
I've got Wayfinder's Guide to Eberron, it's not in there. Waterdeep: Dragonheist is a module. WotC wouldn't release a full class in a module, they'd do it in a core rulebook like Guildmaster's Guide to Ravnica, which isn't out yet.
Link
DanosaurusWrecks
I love him, he's great! I thought Mystic was still in UA though, I'm not really expecting it to come out officially until next month.