MMiaW: Telepathy

On your adventure, you will find different magic potions. These potions are colored differently on each playthrough. For example, blue potion can mean stronger magic in one game, and faster speed in the next game. You can discover their effect with an Identify scroll, or you can take a chance, drink and see what happens.

This one allows you to see the enemies in adjacent areas. (1B) means that the effect will wear off after one battle.