Until now I've avoided almost everything to do with combat so I guess this is my introduction.
You're gonna "the WHAT" on one of the most normal monsters in the game? Your head is gonna literally explode when you encounter one of the entirely RNG creatures. lol
My favorite I've personally ran into while playing was a demon made of smoke. Basically the fog monster from Lost. Except that it wasn't as terrifying as it sounded from its description because smoke is, you know, super easy to cut. He died basically by being wafted away by an infant.