This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Castlevania: The Dracula X Chronicles
Those pallid, constantly-grasping hands in the pits. Should Richter be unlucky enough to fall/get knocked into them, they grab him and drag him down, their perpetual moaning becoming... something else — and a few seconds later, Richter dies horribly. Since those damn demon hands dragged him offscreen, how is left to the imagination.