Then you hear a familiar thud, and see her eyes widen. In a moment she's off of you and rushing towards something in the corner...the box! Or at least, it looked like your box. You supposed it could be another? Without your magic you no longer felt the connection to it to know for sure.
"By the gods," says Wydia as she knelt before it, "A Box of Mischief? No doubt a gift from the goddess for having undone whatever foul magic made you into that false witch." Glee shone from her face, though also a degree of trepidation, but she wasn't going to hesitate. She opened the box.
You craned your neck to see. "Empty?" She said in confusion. "That can't be right..." She leaned her head lower, peering into the box as if she might find some tiny thing she'd missed. Then suddenly you hear a great rushing of air. "Noooooooooo!" She cried. There was a great suction force, drawing everything in the room towards the box! Your table even slid towards it, and fortunately turned to give you a better view. Wydia had her hands braced against the edges of the box as she fought desperately not to be pulled in to the black void that had appeared in the box, but a high pitched shriek was her last statement to the world before she was sucked in, leaving her clothes behind.
The void vanished, the suction stopped, and the box shut. Then it actually made a sound like a great satisfied BUUUUUUURP, and all was silent.
You struggle against your bonds, but it's useless. "Don't suppose you could help me one more time, buddy?" You say with a glance at the box. In response it actually gives you a raspberry, a big tongue having appeared from nowhere to stick out at you. You get the feeling that the box had just followed you and gotten hungry at a convenient time more than that it had intentionally saved you.
You look down at your chest. The sealing medallion lie there still, but it no longer seems glued to your chest. You notice it seems to actually have a bladed edge. Well, that would work, but how to get it to your hand? You have a LITTLE wiggle room in your torso. You can do this, but if you mess up and drop the medallion it's all over. You heave your torso upwards, flinging the medallion down towards your thigh. Almost perfect! But *almost* perfect was still dangerous. It wasn't quite far enough towards the outside. If it fell inwards between your legs you'd probably be screwed. You carefully shift your body again, twisting sideways, trying to drop it into your hand and not off the table entirely. It falls, and terrifyingly it bounces on the table. It lands half on, half off the table, but just barely in range of your fingers. You tenderly stretch out and feel the cool metal. Millimeter by millimeter you work it into your grasp, dreading to drop it.
Success! You've grasped it. You set to work on cutting the rope, and in a little while you are free! Your witch clothes are lying on the ground. You quickly don them again and try not to cry out as you orgasmicly transform back into a woman.
You smile as you feel your power flowing back. It was time for some revenge.
Then you hear a sound, like a teeny tiny little voice screaming. You can't quite make out the words but...it's coming from the box! You step closer and, warily, lower your ear to the box. Still you hear the raging voice, and then you realize: it's Wydia!
You open the box, and there she is inside, but no more than 5 inches tall, and of course stark naked. She's cursing and screaming as she tries to get out, and flinging her hands about as if to cast magic, but it does no good. You reach our with your own magic and can sense that the box has eaten hers. You reach in and lift her out. She struggles in your hands, but she doesn't return to normal size. She's just your helpless little toy now.
You grin wickedly. "Maybe I'll make you into MY little familiar." you say. "But what kind of animal should you be..."