Quill of Ephara

Wondrous item, common

Price: 70-250 gp | low sentimentality

You can use the quill to write a message or draw on any solid surface, including the surface of a living creature, and your work is always legible as you intended. The message appears to be written in black ink, but the quill doesn’t need ink to write. Nothing can remove the message or drawing except salt water, which instantly washes it away.

Paid

You can choose the color of the quill’s ink and change the color at will as long as you’re within 30 feet of what you wrote or drew.

Overpaid

When you finish writing, you can choose to make your written words understandable by all. All creatures who know at least one language see your message as though written in a language they know.

Source: The Gray Merchant of Asphodel