Inkpot of the Thrifty Apprentice
When you speak another command word and expend all 3 charges as an action, a 15-foot cone of ink erupts from the inkpot, coating anything and everything that it hits. Creatures in the area make a DC 10 Dexterity _saving throw_ . On a failure, a creature is _blinded_ until it spends an action cleaning the ink away from its eyes.
The inkpot has 3 charges and regains 1d3 charges each dawn. If you expend the last charge, roll a d20\. On a 5 or less, the inkpot loses its magic and becomes a mundane item.