Take the potion, and you’ll be more likely to place the keystone on the right platform.
The fabled Mirzakhani wand is said to be the most powerful magical item ever created, and that’s why the evil wizard Moldevort is planning to use it to conquer the world. You and Drumbledrore have discovered its hiding place in a cave, guarded by a system of 100 magical stones, including a glowing keystone, and 100 platforms. If the keystone is placed on the correct platform, the wand will be revealed, but if it is placed incorrectly, the entire cave will collapse. The keystone is immune to all magic, but the other stones aren’t, meaning you can pick them up and cast a placement spell, and the platform that stone belongs on will glow. Place all 99 stones correctly and the final platform must be the keystone’s correct resting place. However, one of Moldevort’s henchmen arrives and irreversibly seals a random stone to a random platform. If you need to place a stone that belongs on a platform that’s already occupied, your spell will make some random unoccupied platform glow instead. What are your odds of placing the keystone on the correct platform? After considering the situation, you realize that no matter how many times this process repeats, you’ll inevitably either place a stone on pedestal 1 or pedestal 100 before you reach the keystone. That’s all that determines whether you succeed or fail, and critically, the chances of those events are equal. Drumbledrore then reveals his secret weapon: a rare felush felucious potion, which grants extraordinary luck for a brief period of time. There’s a 1 in 100 chance the keystone’s platform was taken by the first stone and you’ve lost already, but otherwise, you’ve got even odds to win or lose. Taking the potion increases your chance of placing the keystone on the right platform. At present, you have a sense of good fortune.