Alarm potion

This potion can be made to taste and look identical to any other potion. It can be discerned as an Alarmed potion with a DC 20 Intelligence (Arcana) check.

When consumed, the potion alerts the original owner to the identity of the person that drank the potion, their location, and the plane of existence that they are on for the next 12 hours.

The original owner is determined by the first person to drink a drop of the potion.

This item is likely to be found in a villain's lair as a trap, or something of that nature. They likely would've had a drop of the potion long ago, in hopes that a player would mistake it for a health potion.