The boss you fight for the Sun School Obelisk. All Fire, and there's me with nearly 50 Fire resist, sitting there, using Thermic Shield and treasure card Fire shields. I knocked off one minion at a time and for a while didn't get anything but shields and Empowerment treasure cards. I was down to 500 health and then found my heals. I healed myself and then I regained control of the fight. While I normally hate 3v1 fights I found myself laughing at this one.