So I'll keep this short:
Today I was with a friend on both floors of Puppet Master's Mansion looking for "Master" elites.
What we found was a 58lv Sorcerer from Quality Content named "Elitelata".
In the beggining I killed her twice but later stuff began getting complicated.
My friend who's on assassin 65lv tried to attack her but she could spot him from a very far distance despite the fact that it was 58lv vs 65lv and sorcerers do not have any skills to spot invisible targets.
When I attacked her myself later on, I was damaging, hitting non-stop while 2 dots were active and just when she was about to die she USED bumblebuzz wings out of nowhere. This is not possible. Damage was constantly taken, I was hitting and dots were active (poison and fire)...
And no, she didnt use invisibility, and she didnt get dmg resistance for 2s because it was 58lv not 65 so did not have 2nd life...
I do not have any proof but I hope it is possible to keep an eye on this person.