You’re home alone when four women teleport into your home. It’s Hermione Granger (adult version), Wonder Woman, Seven of Nine, and Black Widow (Natasha Romanov).
“We need you to decide something,” says Hermione, “but first, we need to get all your pesky health problems out of the way. Restoro Perfecto!”
You’re transformed into perfect mental and physical health, all diseases cured, excess weight lost, and any missing parts regrown (if that applies).
“If you can do that,” you ask, “why repair Harry’s glasses rather than heal his astigmatism?”
“Harry’s glasses?” Hermione asks, “Good grief, that was 27 years ago, before I’d even attended my first year.”
“Even with your spell,” says Seven of Nine, “this person is too far removed from perfection. We must choose another to settle our issue.”
“Nope,” says Black Widow, “All the data I swiped from the CIA and NSA databanks and ran through your program indicates this person’s profile has the highest probability. Unless there’s a problem with your program?”
“My program is perfect,” says Seven.
“Okay,” says Hermione, “we don’t have all day.” She turns to you, “Choose me, and you get all the magical knowledge and prowess of a seventh year Hogwart’s graduate. Plus this magical wand that repairs itself if broken.”
“Choose me,” says Wonder Woman, “and you get comic-book peak human physical stats, and the equivalent of fifty years experience in each of twelve martial arts from your world: Kickboxing, Tae Kwan Do, Mixed Martial Arts, Jiu-Jitsu, Boxing, Wing Chun, Tai Chi, Aikido, Fencing, Firearms, Wrestling and Pankration.”
“Holy crap! That’s 600 years of experience! But I’d rather have maybe ten or twenty years of experience at, say, Sinanju, Super-Karate or Kree Pama-style.”
“Sorry,” says Diana, “only martial arts from your world are on offer. But you also get fifty years experience with meditation, because that's part of the martial arts too, as well as this magical silver lasso. If you wrap it around an inanimate object, that object gets repaired and restored.”
“Wait a minute,” you say, “isn’t it supposed to be a golden lasso that makes people tell the truth?”
Diana shakes her head sadly.
“Getting people to tell the truth on your world is beyond even our most powerful magic. But you could restore old cars and comic books.”
“Choose me,” says Seven of Nine, “and you get all the knowledge and practical skills of a Star Fleet Academy graduate. Plus, there’s a Federation runabout in orbit, equipped with a Romulan cloaking device and modified with Borg technology for decades-long functionality and self-repair. The entirety of the Federation library is also on board (as of the end of the Dominion War), and a free R2D2 droid.”
“Choose me,” says Natasha, “and you get combined skill-sets from the four recent James Bond films, consisting of Bond, Quartermaster, LeChiffre, Mister White, Raoul Silva, Ernst Stavro Blofeld, Vesper Lynd, and Madeleine Swann. You also get this nifty quantum laptop designed by Tony Stark that’s fifty years in advance of anything on your earth, complete with encryption and decryption programs written by Amadeus Cho and Doug Ramsey. Also, there are two Stark Tech satellites in orbit that link up to your laptop. We call them Odin’s Ravens. You get them too.”
“And that’s it,” says Hermione, “what’s your choice?”