Glamour of Kintaz

[Para99]

Has anyone ever used this spell to mez a mob they are certain was level 56 or 57? Mobs like Undertaker Lord, Juggs, higher level Myconids?

I've always thought this spell was intentionally broken on P99 to mimic what it did in 2001 based on Lucy spell data, but over the last few days I stumbled across comments indicating that it was able to mez level 56/57 mobs in 2001 and that the Lucy data is wrong.

Before I go out of my way to test it for a bug report I wanted input from other Enchanters confirming it is broken, or works correctly if you've used it on a level 56/57 mob. I can take the time to spawn Undertaker Lord and try a few casts during the fight myself, but it's not like I will be able to spam cast a 275 mana spell 10 times to make sure he's immune to it and not just resisting because of his regular MR/level.