Hypnosis spell
 

I could put this in the bug tread, but I don’t know if anybody else is affected and unable to do it. Did anybody hypnotize 4 level troop?

Yup, I was able to Hypnotize level 4 Veteran Orcs no problem.

One thing to note is that apparently lots of level 4 units are immune to Hypnosis thanks to stuff like Presence of Mind, or other forms of Mind spell immunity (it took me a long time to find a stack with level 4 units without immunity). So it might appear as if you can't affect them, but ones without the protection are fair game.

One (me) might think that spending so many crystals on one spell will bring more joy out of it. Combos like hypnotize --> sacrifice (free units) --> then kamikaze for good measure always made me laugh.