The Mystic Forest is a dangerous place, with some unique resources. The puddles you see in the images bellow are liquid potions. The Mystic Trees are there to give you quite the scare as well.
The fact that these flowers have the word dangerous in their name should make you scared to wonder into a Mystic Forest. These flowers will either catch you on fire or damage you from afar! Watch out!
Mystic Wood doesn't like you in its forest and as a result will try to scare you away. They say that the faces that appear are of deceased Steve and his past lifes.
Mystic Dirt has a special property, that is, it loves to spawn witches. So just keep that one in mind!