Elfinia Mandragora

“Can you think what the Mirror of Erised shows us all?" Harry shook his head.

"Let me explain. The happiest man on earth would be able to use the Mirror of Erised like a normal mirror, that is, he would look into it and see himself exactly as he is. Does that help."
Harry thought. Then he said slowly, "It shows us what we want... whatever we want..."
"Yes and no," said Dumbledore quietly.
"It shows us nothing more or less than the deepest, most desperate desire of our hearts. You, who have never known your family, see them standing around you. Ronald Weasley, who has always been overshadowed by his brothers, sees himself standing alone, the best of all of them. However, this mirror will give us neither knowledge or truth. Men have wasted away before it, entranced by what they have seen, or been driven mad, not knowing if what it shows is real or even possible.

"The Mirror will be moved to a new home tomorrow, Harry, and I ask you not to go looking for it again. If you ever do run across it, you will now be prepared. It does not do to dwell on dreams and forget to live, remember that. Now, why don't you put that admirable cloak back on and get off to bed.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone

“Fred and George turned to each other and said together, 'Wow, we're identical!'

'I dunno though, I think I'm still better looking,' said Fred, examining his reflection in the kettle.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“My life and his were twisted into a single strand. Cut one, and you cut both. If he were gone, I would not be able to live through that. If I were gone, he wouldn't live through it, either.”
― Stephenie Meyer, Breaking Dawn

“Hang on . . .” Harry muttered to Ron. “There’s an empty chair at the staff table. . . . Where’s Snape?”
"Maybe he's ill!" said Ron hopefully.
“Maybe he’s left,” said Harry, “because he missed out on the Defense Against the Dark Arts job again!”
“Or he might have been sacked!” said Ron enthusiastically. “I mean, everyone hates him —”
“Or maybe,” said a very cold voice right behind them, “he’s waiting to hear why you two didn’t arrive on the school train.”
Harry spun around. There, his black robes rippling in a cold breeze, stood Severus Snape.”
― J.K. Rowling, Harry Potter and the Chamber of Secrets