King Juice
From Mercatopia
The KingJuice is a juice that you can obtain from a rare Insect, by cutting the insect open and then drink its blood. That insect is very rare because you can only find it near a volcano and the insect will just appear on a full moon. By drinking the KingJuice, you will have the appearence of a very noble person, even if you are a very poor person, people around you will see you as a very rich VIP. With that potion, you can access to all the VIP parties of Castles.