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You have found a potion from the Tavernmaster's private collection! Feel free to use it in your role-playing sessions. If you are a player, assign it to ONE of your characters. If you are a Game Master, be sure to remove the label before placing the bottle in your dungeon...

Water of Ratsbane (3 doses)

This thick, yellowy-green liquid tastes even worse than it smells. Five minutes after gulping down a dose, your bones will have softened so much that you can slowly squeeze yourself through spaces half the size that you could normally manage. It's most disturbing to see you do this, as your face and body are stretched and deformed by the wriggling.

The effect lasts for half an hour, so be sure to get out of any cramped places and straighten yourself up before your bones reset!