So you might think using Pyro would make sense when there's Cryo mages. But every time you trigger Melt, this domain drops a lightning bolt on your head. When I tried using Xiangling here, those bolts would do 4881 damage apiece regardless of max HP. It's still possible to use Pyro, but you need great healing to offset the damage. Electro is my best element anyway, so no need to go through that trouble.
Kind of a slow run, but came out of it healthy without using items so I went... sure, might as well go with this one. The Archaic Petra mask that dropped turned out to be pretty nice, with Crit Rate main stat and a good amount of Crit DMG. That makes 2 good Archaic Petra pieces for Ningguang, so I won't be farming this domain for a while.