Link shoots Fi.

Acting on that impulse, Link took the crossbow and pointed it at his floating companion. He pulled the trigger before Fi could react, and immediately there was a flash of light. It completely blinded Link, and when he could see again he was looking at...himself. In front of him was the body he had occupied all his life until that very moment, staring at him with the most dispassionate look on his face he could imagine. He looked down and realized that he was definitely inside Fi's body, her bright purple/blue body in clear view. His body looked at him and said, in a frank voice, "Master, I am 84% positive that we have switched bodies."

Link raised his, or rather, Fi's eyebrow at that, then asked exactly how Fi had arrived at such a number. And what was the other 16%?

Blandly, Fi replied, "It is possible that the item has caused us both to delude ourselves into thinking that we are the other, however when considering the existing information gathered on the object, I gave it a lower probability. Master, are you uncomfortable?" That question was likely in response to Link's freak-out, which was largely due to him noticing that he lacked any arms now. In what was most likely the most emotive look Fi had ever given him before, Fi said with a hint of relief, "Master, my body is capable of forming arms. You merely need to focus on your desire to possess them, and my body will form them in response." After a few seconds of trying, Link found himself looking at the bright blue, slender arms that had manifested from his body. He took a deep breath, calming himself down.

Link asked Fi if there was any chance that using the crossbow again would reverse the magic. Fi merely nodded, aimed the crossbow at Link, then tried to fire it again. Except this time, there wasn't a flash of light at all.

"It appears that using the crossbow again will not solve the issue, Master," Fi said. "What would you prefer to do next?"