Summons from the Depths in Nazjatar. I assumed more people were attacking it, turns out there were only three with no healers or tanks around. The monstrosity is still good fun when it can drop a dozen adds and immediately follow up with the rain that disorients you for 5 seconds if you don't dodge it. The corruption debuff that slows you down makes it a real good time when you have 4 mini-boys constantly pecking at you.
Anyway, everyone died, I ressed and sat back after it reset, and everyone waited for more people to show up.