When a player drinks this potion, they will get the Invisibility effect. Mobs cannot see them unless their hitbox is touched. This renders the player completely invisible, unless they are wearing something.The distance from which mobs can see them starts at 1 and increases by 3 blocks for each piece of armor worn.he Potion of Invisibility was introduced along with the Potion of Night Vision, which it is brewed from, in the Pretty Scary Update. A Potion of Night Vision plus a Fermented Spider Eye makes a Potion of Invisibility.