Clouds:
A majestic white dragon rising from the mist
Imagination intensity: 25%
seed: 500
Shape to use: 2

Cave:
A Norwegian troll peacefully sleeping on a rock. Smiling as if having a pleasant dream
Imagination intensity: 40%
seed: 209145
Shape to use: 1

Stain
Aggressive and mean blobs of green and brown bacteria. Just waiting for a chance to infect you. Inspired by children's books 
Imagination intensity: 85%
seed: 666
Shape to use: 2