Troll Bogeys are an important ingredient in Hogwarts Legacy and you'll need to find one for Professor Onai's Assignment, which allows you to add Descendo to your collection of spells. It's also a required item for a number of potions so figuring out where to find the handy—but gross—item should prove useful.
There are a couple of ways to get your hands on Troll Bogeys and you'll need to leave Hogwarts for both. Remember to activate floo flames by walking near them so you can fast travel to that location if you need to return. Here's where to find Troll Bogeys in Hogwarts Legacy.
