As of the source update, both are spawning with the ToFS stonewall whereas they weren't before. Both seem to be immune to magic as I haven't had a single dispel land after twisting on multiple characters for 20 minutes on each of them. I just want to know if it's intended for you to just afk on both of them for 20 minutes, because even with UW9 their health doesn't budge more than 3% a minute with the stonewall up.
40+ minutes to kill two named that used to take 5-6 minutes!