Jon tried to grab the wand back, but ended up getting touched by the sparkly silver star part of the wand. "Oh no," he uttered, before he felt himself changing.
Zoe's eyes went wide, as she watched Jon become a girl! But it wasn't just any girl. It was herself! Jon became a clone, or twin, or whatever, of Zoe! He, or rather she, was even wearing the same exact outfit - a green sweater and scruffy slacks.
"What's wrong? Did something happen?" Zoe's clone asked.
"Jon, you're ... me!" Zoe nearly shouted, in shock.
"Who's Jon? I'm Zoe."
Zoe's eyes went even wider, if that was possible. Not only did Jon look like her now, he actually believed that he was her!
It seemed that the wand did one specific thing, dependent on the person who held the wand. When Jon held the wand and used it, whoever the wand touched, it would replace their personality and lifestyle with another close-by person's personality and lifestyle, removing it from that other person. When Zoe held the wand and used it, whoever the wand touched would become a clone/twin of herself.