Potion, legendary
The user is bestowed with enhanced hearing, able to hear distant whispers as far as 500 ft as if they were beside the person. User gains advantage on all perception checks. Effects last until the next long rest.
Side Effects: Roll a d20
1 - After 10 minutes user goes deaf and fails all perception checks until the next long rest.
2 to 5 - Loud noises cause the user to drop anything held to cover their ears until the next long rest.
6 to 10 - User speaks only in shouts until the next long rest.
11 to 17 - No side effects.
18 to 19 - User cannot be surprised until the next long rest.
20 - User cannot be surprised and gains ability to sense danger until the next long rest.