I will also list the transformations I've found because I can't remember the normal dialogues. Also that would be way to fucking long
Tree (has a way to grow it but I can't find it at all)
Alien
Tentacle
Jellyfish
Silence
Void (if you do it twice you get a new death scene)
Time
Child
Life (when she's normal)
Demon (not devil)
Chicken
Cow
Deer
Dragon
Fox
Spider
Clown
Gun
Greed
Sadness
Sheep
Nothing
Everything
Me
Skeleton
Man
Science
Machine
Mother
Family
Bear
I missed a few because I forgor but here you go!