I often come across a situation where a monster uses a special spell. It looks like a dark sphere around a monster, with a diameter of about 8 meters, which arises with the sound of a crackling glass.
The battle script is deployed in the following order. The monster approaches you and starts a close fight. After that, he reads this spell. When you are inside this sphere, you slow down and begin to lose health.
This is very bad, because a monster usually has a two-handed sword, by which he starts just chopping you to pieces. I try to leave this place right away, so as not to be killed quickly. I make a leap to the side, a maneuver, but it takes a lot of Stamina. Then the monster beats (a heavy attack), and my Stamina ends completely. In the end, you just have to run from it.
That is, the battle is so formed that you should just run from the monster, around the circle inside the loaction, while you are recovering Stamina. In this case, the Monster screams offensive words - like "you're a weakling." In real combat, you need to be a very serious fighter to defeat such a Boss alone.
The question is what kind of spell is this, and why can not the players themselves use it? I played all 4 Classes, and I know the fighting techniques of each of them. But this spell does not exist, not one of them.