These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Retardant: An odd variation that only comes about because of a retcon to the Dungeons & Dragons rules. It's emphasized that only fire can kill trolls in Streams Of Silver, and an anecdote is related of many a scavenger or predator that had come across a severed troll body part only to be horribly killed from the inside out as the troll regenerated. However, in another Salvatore book set in the Forgotten Realms (one of The Cleric Quintet novels), the rules had since been expanded to include acid as a way of putting a troll out of commission permanently, and the characters use both acid and fire on trolls. Now, what's in a stomach?