"I can touch him," Karyn cooed, "So maybe you can be me for awhile."
Jon felt the world shift around him and his body constrain as, like feathers falling to his shoulders, identical blond locks appeared and glided into place. His body got tighter and tighter and his clothes felt loose. His crotch felt like a vacuum, as it puled in on itself. Then, just as quickly as everything tightened, he felt parts of his body expand as breasts swelled, matching Karyn's wished-up pair.
Jon lay on the ground, almost gasping for air as though he had to relearn to breath. Though his nose at least. His mouth was still sealed shut and he was unable to give voice to the terror that filled him. Karyn was magically charged with a perverse lust for what was once Biff Meadows and now had the power to do anything that popped into her warped mind.
Karyn climbed on top of her mouthless double and began stripping her of Jon's clothes. In a moment, the two women were almost a perfect match. Karyn ran her hands down Jon's new body, kissing his neck and stroking her hair, pushing a kiss against the place where her mouth should be. Jon couldn't help the new sensation of it all and felt herself getting wet. Sensing this, Karyn ran her fingers down her duplicate's leg, gently fingering the tip of Jon's glistening crouch.