Varhesh, Tier 13 Terrace Boss immune to damage.

Hello everyone. I was just doing a divine vessel tier 13 terrace map to extend the elder's influence, and everything was going great right until it wasn't. I was damaging the boss as per usual with a volatile dead build, and now he is just sitting in the bottom right "pool" and he will not leave it.

I cannot damage him, coax him out, or really do much. The boss arena is still shooting the frostbolts at me though. He has about 1/3 Hp, and I can hover over where warlord's mark is telling me he is to see how much HP he has.

I don't expect a dev to come fix my map, but it is an obvious bug.

All the Best,
BenchYourSquat