The Lagoon is a dark and mysterious place during the night hours.  A lot of moss and lily pads surround the shore.  The water is very murky.
The Lagoon, Lake
townsperson
witch
I am the village witch. People come to me for all sorts of help - potions to make them age slower, or magical plants that provide healing properties. I have 4 apprentices who I am training in the art of magic. Their spell-casting skills are basic, but coming along nicely.
Aha! What are you doing, lurking about in my lagoon? I got bored of the town so I decided to wander. Do you live here? I come here to train my apprentices and get ingredients for my potions.  Oh cool! What type of ingredients do you use for the potions? Right now I'm looking for moss, two eyes from a toad, and a mushroom. That sounds funky! I've got a basket of produce right here, do you need anything from it? I don't need the produce, but I could use the basket. In trade, I will give you this potion. It's guaranteed to attract the love of your life. That is the sad part, I have no love of my life. But you say this potion can change that? Was it created here in the lagoons? I made it in my cave on the other side of the forest. It's got a pungent odor, but it's guaranteed to work! As long as it works, I am willing to trade you. Do you have any other special potions?  No, but now that I have this moss, I'll be ready to make my next potion. It's a hair growth potion. Give me that! I definitely need that for my armpits! Yippee! I am so happy you are a peaceful witch and not a druid that casts spells on us townspeople!