The potion tastes exactly like blood, and the moment it passes your lips you feel thorns: stabbing pains spreading throughout your body, the worst of it centered around your ribs and lungs. It’s getting harder to breathe … and as time goes by, coughs will come, light at first but quickly intensifying. By the middle of the third round, you’ll be coughing up blood. It'll be touch and go as to whether you'll make it to the end of the fourth …

The bubble holding the keys shimmers and vanishes, leaving them to drop to the floor.