
do you think this is a reasonable boss encounter for a level 11 party?
tried to put a screenshot, but I can't post images. Here's the link:
https://www.dndbeyond.com/monsters/62212-monkey-king
It's a party of 6 players, with not great armor but a few very powerful items (mainly a vorpal sword). Wizard, Ranger, Rogue, Barbarian, Monk, Fighter. I intend for the fight to be tough but fair, maybe half of them getting killed would be acceptable. It's a boss fight, and they'll arrive fully rested and in peak condition. Does this look like a reasonable challenge? Or should I buff/nerf some aspects?
Regarding the body double ability, since it doesn't give details I think it'd be reasonable for the clones to have much fewer hit points than the original, maybe even just one since otherwise it runs into an unmanageable situation.
Thanks a lot for your help. I'm trying to give my players a genuine challenge, but I'm not aiming at a TPK unless they get extremely cocky or unlucky.