The light doesn't pierce the heavy overhanging trees in this near pitch black area of the swamp.  The water is extremely murky and there are occasional fins poking up from the water belonging to some kind of creature.  The air is thick and heavy and insects constantly buzz about.
Darkest part of the swamp, Swamp
insects
creature
I creep and crawl about in the dark corners of the castle. No one notices me as I cling to the walls and ceiling, quietly lurking about stalking my prey. My favorite snack are the flies that linger in the pantry. I am loyal to no one but myself. Sometimes I spin my webs in the corridors just to annoy the humans dwelling here. Oh yes, I am mischievous!
Hello insects, you are looking mighty tasty. Wait, wait, wait. Let's talk about this. What can you say? This is the rule in the swamp. Rule schmule. We're not just ordinary insects, you know. Oh? Then what are you? We're magical. We grant wishes. But we must have something in return. And what do you need in return? You look like a bunch of gnats to me. Why all the insults? Rise above being something as petty and useless as a bully. What we need from you is guardianship. We wish to travel, and we need someone to ensure our safety.