Need to get rid of whatever mod makes all the monsters on the screen invincible

I don't know what it's called but it is so god damn stupid. Just randomly nothing dies, too much crap on screen to tell what you have to kill, terrible design. What is the purpose of this? It isn't fun, it isn't cool, it isn't interesting. remove it.

It's an Aura ('cannot die Aura'), usually on one rare Monster. Don't see the problem with it, tho sometimes it can be nasty/annoying to get to or even find the correct target.

The same with golden domes (bubbles) that make monsters inside invulnerable. It lags the hell out of the game.