In the page for curse : http://wiki.spiralknights.com/Curse
This is stated : "Devilites and Lumbers may receive Curse, but they will not take any damage from it."
Witch is incorrect, since only Yesman;Pitboss will not take any damage from curse status because they do not attack the others do.
I'll let you folks do the testing to confirm.
Cheers and thanks!
You mean to say you didn't actually test whether or not devilites take damage from curse?