Metamorphosis

As I sat near the peaceful lake I detected all my composure was fake A beautiful butterfly flew Suddenly a sword it drew It changed into a deadly dragon Heading towards hell was its wagon The dew on the flowers all turned black Peace and beauty were all thrown at the back The sky was no more blue A grey substance rained like a glue Stuck in it i became pessimist even more I wanted to escape from an invisible door My hands then transformed into wings What else was reserved for me in the long list of findings???