What is said upstairs is right. Transformation is another name for double body: you need to paste people according to the eight characters, paste the corresponding spells, close-fitting clothes and hair, and then burn them.
See the article "Send a Double Variety": /forum.php? View thread & tid = 875. Highlight =% CB% CD% CC% E6% C9% ED% D6% D6% D6% D6