You can use Hold Person on Ethel or her copies? I thought she does not count as humanoid. I'll try it out.
Using control spells against the mean Mystic Carrion at least proved not very successful. Hold Monster does not work because of undead. Sheeping or banning failed three times in a row (despite disadvantage etc.). After that I used Quickened - Create Rain - Chain Lightning to finally end the affair.
Oh, no, I meant the humans she has enthralled with "friends". I didn't want to kill them but they were the ones who made the fight difficult for me. Ethel and her copies were content to mostly cast Ray of Sickness (I think) which was more of a nuisance than anything because the group had had a nice Hero's Feast before. She also seemed mostly interested in harming poor Wyll, who's a Warlock/Paladin in my game and he was also concentrating on something, so she left Astarion who had all her minions in HP in peace and Gale detected the hidden copies with Volo's eye or just aoe-d the ones that succeeded in staying hidden (you still see were they are after all). It went surprisingly well.
