The boys watched in awe as Mr. Mendes' body slowly transformed to become Ric's. First all of his hair, from head to toe, fell out. He looked kinda funny and the boys started to giggle, I mean he didn't even have any eyelashes.
Then his bone structure, except for his head, started to shrink. Leaving him with a body the height of Ric's, but with now huge muscles as they haven't shrunk yet and also an oversized head.
Ric looked on in amazement seeing more or less how his body would look like if he was a child bodybuilding prodigy. It was sort-of turning him on.
But now those cool muscles were shrinking in size to match Ric's pathetic 13 year old muscles. With those glorious muscles now gone his hip clothes now fell to the floor revealing what would have been a huge set of genetalia. Again Ric saw what his body would look like if he had a heavy pair of balls and a cock that hung 6 inches soft.
As before what he saw before him and lusted to possess himself disappeared right before his eyes. Mr. Mendes glorious family jewels shrank to the size or Ric's "wee little winky" 3 inch soft cock over a pair of cherry tomatoes.
Now the spritz of hair that Ric had on his body started to grow in on Mr. Mendes. A light ring around his cock formed, some peachfuzz on his face, the hair on his scalp, and the little that remained on the rest of his body appeared.
Then Mr. Mendes head started to shrink down to Ric's size and his face dissappeared only to be replaced with Ric's face. "What in the hell just happened?!?!", Mr. Mendes' voice shouted out of Ric's second body. "Josh and I now possess the power to change anything, but since we are the rightful owners of the magic book no one else has power over it. He then yelled, "You'll never get away with this!!", but by the time he had finished he had completely changed into Ric including his voice. The only thing that hadn't changed was his mind.