Twilight Sparkle sat on her bed, engrossed in her book, when she heard some sort of chirp, that sounded as if it were saying 'Natu'. Twilight bookmarked the book, and trotted over to the window. Some kind of green bird with a red feather atop it's head perched on the window sill, and called out "Natu!" It had yellow, black, and red wings, and a red tail. It was oddly spherical, and Twilight thought it was somewhat cute.
"Aww, Hi little guy!" Twilight cooed, looking at the cute little bird.
"Natu!" It squawked.
Twilight held out a hoof cautiously, and it hopped onto her hoof, somehow grinning. "That isn't even possible for a bird!" Twilight examined the little bird, it became alarmed, and backed up.
"Natu!" It squawked in some sort of protesting manner.
"Oh! I'm sorry." Twilight said, gently placing the creature of the nearby desk.
"Natu Natu!" It said.
"Should I call you Natu?" Twilight asked.
"Natuuu!" It said, happily.
"Okay!" Twilight said, smiling.
She went over to a bookshelf, looking for a book about birds. She pulled one out, flipped through the pages, not a single bird in there looked like it. "Hmm." She said tapping her chin. "Oh! I've found a new species!" She cried, excited.
"Natu?" It said.
Twilight pulled out a quill, and wrote down what she had found, she sent it to Celestia, via magic, since Spike was away. Celestia wrote back a moment later, explaining, and there was a red and white ball, that she were to catch it with, and say Go! Natu! to take it out of it. She caught it, and let it out, she thought it may be cramped in there.
"Natuuu." It said, now seeming to like her a lot more.
Meanwhile, Fluttershy was outside, feeding her animals. she gave Angel bunny a little carrot, and for once he ate it, a bit reluctantly but he did. She went over to the other, and fed them the appropriate food. Once she was done, she stopped to admire all the cute little animals. A little pink animal shyly peeked out of the Everfree forest, some kind of green at the top of it's head. Fluttershy slowly came closer. "You can come out, little guy, it's okay, I won't hurt you." Fluttershy whispered softly to the strange creature. It cautiously came closer, and said something sounding like "Hoppip." "What's that, little guy?" Fluttershy said, surprised. "Is that your name?" Fluttershy asked. It shook itself, as if to say yes. "Oh, it's okay, Hoppip, come here, don't be shy." Fluttershy said softly. Hoppip slowly came over to her, the gentle breeze lifting it up, and pushing it gently to Fluttershy. It said 'Hoppip' once more, and drifted closer. Soon, it was directly in front of Fluttershy.
"Aww, you're soooo cute!" Fluttershy exclaimed. It let out a happy squeak.
"Hoppip!" It said, and twirled around.
~Meanwhile, back at the castle~
"All of this just to conjure up a cake?" Luna asked, squinting and cautiously looking at Celestia.
"Well, yeah. I'm not sure how cake was mispronounced as portal to a dimension full of weird... things." Celestia said.
"Well, then thou mustn't have screwed up on the cake part." Luna said, rolling her eyes.
"You're right, but I don't think there was a part of this spell that could really get us into such a big pile of--" Celestia was cut off by Luna shoving a hoof in her mouth.
"Not in front of the children, Tia." Luna scolded.
"Oh, right." She said.
"Well, there's gotta be some way to get rid of it, but we have something else to discuss first." Luna said.
"Is it how that Arceus guy gave me such a strict set of rules to follow?" Celestia asked, thinking back to her conversation with the legendary Pokemon.
"Precisely. It sort of bothered me. Especially when he said that some ponies will become corrupted due to the sheer power of these "Pokemon" that are now inhabiting Equestria." Luna responded, sighing.
"It does seem strange, I'll need to talk to him about it." Celestia said. She walked out onto the balcony, when suddenly she heard a huge bang and shrieks of terror.