dragon's bane

you utter a chant that is obviously unknown to this world. as you chant, you start to feel a power start to form in you. It grows more powerful and powerful. once you have finished chanting, you feel a pain from inside you, as if the power is to great to be contained. Then, you start to feel yourself grow, slowly. as you grow, you feel yourself morphing, changing. you start to feel you armor and clothes break off, to reveal that you have now scales, all the way along your body. you feel your body shape change, as you now have to walk on all fours. you feel a long, scaly tale start to form, and your head become more pointed. you feel your back expanding, to grow wings. and you keep growing. when the transformation is complete, you should be fully transformed into an adult dragon of your selected type, as if affected by a true polymorph spell, except you keep all mental traits and your wisdom and intelligence scores. also, make a DC 15 wisdom saving throw. on a failed save, your alignment chances as well. spells are kept. the DM should have the traits for the dragon.

this spell is permanent, but can be reversed by a wish spell not cast by you.

if three other spellcasters with a 9th level spell slot help cast the spell, then the creature is transformed into an ancient dragon of the type. an additional 5,000 gold pieces must be spent this way on a tooth of an ancient dragon.