Potions of exchange are a rare type of potion in ADOM. As their name implies, they can be used to change the properties of an object: * Drinking a potion of exchange will cause a number of PC's attributes (along with their potentials) to be swapped. The number of attributes swapped depends on the B/U/C status of the potion — blessed potions affect 2, uncursed 4 and cursed 6. Attributes are always swapped between each other in pairs. The message "You feel altered" is displayed after doing this. * Throwing a potion of exchange at a monster (or bashing them with the potion in melee) will transform it into another one according to the current DL. Monsters that cannot be wished for (excluding those with special wish behavior) are not affected. Shopkeepers can be transformed, but multiple