This page offers a guide on how to complete and where to locate Fly Agaric, which is a mystery located in Sciropescire.
Change the Flames
This mystery is located south of Wenlocan Abbey in Sciropescire. To activate this quest, like all other Fly Agaric quests, you’ll need to first eat the mushrooms. The solution to this Fly Agaric puzzle is to change some of the flames at the different altars from red to blue by interacting with them. The ones you’ll need to change to blue are the flames found above rotting or spoiled food. Facing east, from left to right, the order will be blue-red-blue-blue-red. When you’ve gotten the order correct, the gate will appear and you can go through it to complete the quest.