Hello, this is a different Self Insert, most Harry Potter SI stories give the SI character magic power as a wizard or witch but what would happen if we came as the muggles we actually are, with knowledge from the books as our sole advantage.
This will also be an AU of JAGS Wonderland, but you should know something, you see, I haven't been able to find barely any info about the tabletop game, I found out about the game in TV tropes and fell in love with it, so I'm basing it off purely on the TV tropes page and the single fanfic I found about it in the whole site.
It will also crossover with undertale and possibly others.
"Harry Potter"
Harry froze in his seat, the champions of the triwizard tournament were being chosen and just when it looked like it had ended, another piece of paper had come out, but what professor Dumbledore had read had to be some kind of mistake, for starters he had never put his name in the Goblet.
Harry turned to Ron and Hermione, beyond them he could see the other Griffindors looking at him open-mouthed.
"I didn't do it" Harry said looking at them confused "You know that"
"Harry, please come here" Dumbledore said, but while Harry was walking, enduring the glares and growing ire of everyone, something very strange was happening.
You see, the Goblet of Fire was as you all know, heavily enchanted in order possess an artificial intelligence and it was realizing it was being tricked, so before it shut down, it decided it was going to do one last thing.
Calling upon it's magic it searched for some kind of help and then the grail pulled.
Outside, Harry had just gotten to Dumbledore when to everyone surprise the Goblet starting up again.
"No way!" and "Again!" other students said, getting even angrier than before.
Another paper came out and Dumbledore read it, even more confused than before.
Till
Champion of the goblet of fire
After that the flame started growing larger and to the astonishment of EVERYONE in the large room, students, staff, and guest alike.
The sphere of flames, in fact, grew big enough to the point where it could easily contain a small person and indeed, there was a silhouette of someone in the fire, until…
FOSH!
CLING!
POW!
The figure, a child around 8 years old collapsed on the floor