Potion of invisibility

The potion of invisibility confers an ability similar to the wizard spell of the same name. Actions involving combat cause termination of the invisible state. The individual possessing this potion can quaff a single gulp -- equal to 1/8 of the contents of the container -- to bestow invisibility for a shorter duration.

Note: This item originally appeared in this form in the 2nd Edition Dungeon Master Guide for the Advanced Dungeons & Dragons game by TSR. Its inclusion here is for the purposes of providing context for the campaign only.