You felt that your balls started to itch. As you started scratching them, you saw that your skin was peeling away to reveal scales.
"That's not right," you said to yourself.
Suddenly, you felt an immense pain errupt from all over your body. You fingernails and toenails fell off and were replaced with sharp claws. Your balls started to sink into your body, and your cock started to go inside its new reptilian sheath. Your tongue became more reptilian as your head elongated and grew a pair of horns on top as all of your body hair fell out. Your teeth feel out, and were replaced with more reptilian like teeth meant for eating large quantities of meat. Your feet and hands reformed as they became more reptilian like while making sure that your stance would still allow you to walk on two feet.
Suddenly, you felt three things form on your back. You turn around and saw that you grew a very long reptilian tail and a pair of draconian wings. You unfurled them and saw that they extend 25 feet outwards on each wing.
The pain finally subsided, and you look at your new body. You were now a 17 feet tall male dragon with green scales covering its entire body. You felt your arousal starting to kick in and your reptilian eyes narrowed on the sign that you missed that was next to the plant you were standing in.
"Draconian Wild Vines: These vines are from a world that humans are not in, but it will cause the human to become a dragon when they step on these vines," you said to yourself quietly. "So much for not noticing this sign. Now, what to do?"