Funny enough, I got the worst effect from the witch first time. I was surprised I even had epithet.
I want to note, mandrakes still seem broken. for 20% odds, often times I don't get any. And it's been a long... long time trying to get mandrakes for the runs, and the 1 mill to buy items to help you last longer.
Viewing post in Surviving Magic Academy as a Demon Lord - Demo comments
My preferred path, once demon time is available, is to head for mandrakes, save, and collect until I proc screaming. If I don't get any, refresh and try again. Even if you do it properly through alchemy, you're still rolling luck to get enough refined salts (on top of wasting a bunch of time and resources getting there); I instead opt not to bother.