You couldn't say why you were drawn to that particular costume. It looked nothing like anything you would normally be caught dead around. But something about it was drawing you in.
Curling back across a headpiece with long white hair attached were a pair of what looked like black ram horns. Delicate armor that looked almost like a shiny exoskeleton covered much of the torso and arms, and out of the back sprung two black, leathery wings. The bottom half was also a show-stopper. Covered in black hair, the legs resembled that of a goat or other ungulate, with cloven hooves and a long ropy tail with a tuft at the end sticking out the back. It was also obviously male.
In spite of yourself, you opened the glass door, ostensibly to get a better look. Before you realized it, your hand had reached inside the case and--
"I wouldn't do that, that one has a mind of its own," Uncle Jack said as he flipped the light switch on. Discomfited and embarrassed at being discovered, you yanked your hand back and turned to face him.
"I was just--I couldn't sleep..." you stuttered, trying to pretend you were just looking around. Uncle Jack waved his hand, and the glass case shut on its own, although at this point you were too discombobulated to be surprised.
"You've had a long day, you need to get some rest," Uncle Jack said kindly, seemingly not irritated at your late-night adventure. "If you can't sleep, might I suggest this one?" Something flies out of Uncle Jack's hand and you reach out to catch it. It's a furry costume with multiple parts packed in a clear bag. You examine it for a second, then squint up at Uncle Jack.
"It's a lion...." You hinted, but seeing Uncle Jack nodding nonchalantly, you elaborated. "It's a male lion..."
"Of course, don't you know? Male lions can sleep up to 20 hours a day," Uncle Jack responded evenly. "Nothing like a nice relaxing nap to get you refreshed for a new day."
You can't help but look blankly at Uncle Jack, wondering if it's weirder that he's suggesting you sleep in a costume or that he seems to have no objection to changing your gender (not to mention species) for the purposes of a good night's sleep. Numbly, you walk toward the door and exit with Uncle Jack.
"Sorry I didn't warn you about those," Uncle Jack said as you left, nodding back at the glass-enclosed costumes. "I didn't think the attraction would be so strong. Just avoid them for now, I'm still working out the kinks on those."
You were so flabbergasted that you had pretty much forgotten about the fancy costumes, although there was a little bit of curiosity at the back of your mind. Still, you'd had enough adventuring for one night, so you headed up the stairs with Uncle Jack and returned to your room.
Tossing the costume in a bag on the bed, you eyed it warily. Should you actually wear a lion costume just to get some sleep? You didn't notice, but you were now treating the costumes as genuine magical objects, and accepting the fact that they could change you into something else. Realizing that there was too much going through your head, you finally reached for the bag, and...