Troll in the Dungeon! (Harry Potter/OC-Insert)
C59/100Web serial by Fabled Webs
Ongoing199,075 words · 44 chapters · 2023
A man fills out a CYOA to become a seer and ends up reincarnated as Blaise Zabini — the other blank-slate Slytherin. Not a serious story; mostly written to explore some plot bunnies.