Potion of see invisible

The potion of see invisible, cost 50, enables you to see invisible items. Blessed potions give you the intrinsic permanently; uncursed and cursed give you the intrinsic for a number of turns.

This potion also unblinds you if you were previously blind.

The potion of fruit juice has the same message; these are therefore difficult to tell apart by random quaffing. Some ways to tell the two apart include:

• If you were blind and were unblinded, it was see invisible.
• If you see previously invisible objects/enemies after quaffing, it was see invisible.
• Zap a wand of enlightenment or otherwise attain enlightenment. If you have the see invisible intrinsic, it was see invisible.
• Fruit juice is sold in a delicatessen; see invisible is not. If you see one of the two in a deli, it's fruit juice. Likewise, if a deli buys the potion, it's fruit juice.
• Dipping a unicorn horn into a potion of sickness turns it into fruit juice.
• Dipping an amethyst into a potion of booze turns it into fruit juice.
• If you are on the border of a hunger change and it disappears upon quaffing, it was fruit juice; however, this is difficult to test.