you could have fun and mess up game of thrones/planatos.
I was thinking a less hormonal DxD could be interesting with the magic systems... Or, Fate/Nasuverse since Lucius loves magic. (Could use the grail to make Ciri immortal in some twisted Au?)
Video Games · Pythia
original name of Harry Potter and the international triwizard tournament by Saliient91
Unveiling Destiny: Harry Potter and the Triwizard Revelation
Book&Literature · AlexanderBlackfyre