This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Ghost Rider
Skinbender has an ability to transform anything she touches, which leads to lot of Body Horror.
The first issue of the All-New Ghost Rider has Robbie surrendering to what he thinks are the police...only to be shot a dozen times. His dead body is left beside a flaming car and then gets set on fire, too, completely consuming his flesh, until all that's left is bone. And then he wakes up screaming.
In the following issue, Mr. Hyde punishes a subordinate for a relatively small failure by tearing his eye out before giving it to his new second in-command as a warning...