"Here we are the perfect transformation for a perfect new dragon," the voice said
"Did you say dragahhhhhhh!" You screamed as spikes stabbed up out of your head trailing blood.
Black scales grew all over your body as your hair fell out and your horns turned purple. Your spine cracked and your legs reshaped making you a quadruped creature. Your skull reshaped forming a muzzle and your teeth sharpened as your tongue became forked. Wings pushed out of your shoulders with purple flaps to match your horns. Your hands and feet change to give you four claws with four toes, and your front claws reformed giving you partial hands. You stared at your purple claws until pressure built up in your rear and a tail grew out behind you. The scales finished spreading over your breasts which remain on your torso, and you grow to the size of a horse, including your breasts.
"Yes I did say dragon, or dragoness to be specific," the voice said
"YOU'RE DEAD!" You roared at the voice
"Whoa whoa, now easy that attitude isn't good for attracting mates." The voice said
"What do you mean!?" You roared again
"Mating season," the voice said," here let me help you prepare."
You suddenly become extremely fertile and go into heat, on top of that your surroundings change and your in the mountains near a volcano.