'How long has it been since I was defeated? Days? Months? Years? It doesn't matter! All I know is that I'm stuck like this! Ever since I was banished form Luna's body I've been nothing but a pile of magic mist! 1000 years we're stuck on the moon only to get our flanks handed to us again!', Nightmare Moon sighed to herself. 'It's days like this that I really wish that I'd never possessed Luna. Hm? What's this?' Nightmare was sensing something. An energy that was similar to the elements! Maybe even stronger! 'Power. Great power! But where is it coming from? I sense the element of magic is near it.' Nightmare drifted to the Castle of Friendship, and saw Burst Stream! ' A male alicorn? But that power doesn't feel like any thing from this world! That can only mean he's not from this world. Wherever he's from, it must lie beyond that mirror.' Nightmare watched as Burst and Inferno headed through the mirror back into the human world. 'Looks like I was right about him. He seems to have left quite the residual trace of magic behind him. I'll just help myself to some of it. It should be more than enough to restore my body during the trip through that mirror!' And with that, Nightmare Moon went through the mirror! When she arrived on the other side, she found that she had a new body to suit this world. "Huh. So this is what the inhabitants of this world look like." Soon a flash of light went off in her hand and a duel monsters deck materialized. "This that card game foals seem to enjoy.", Nightmare said as she examined her new deck. A sly smile graced her face. " Heh. This deck was definitely made with me in mind. I bet there are some duelists here who could give me a decent challenge. Well then, this world should be fun!"