Pharika’s Libation Jar

Wondrous item, rare

Price: 5,000-8,000 gp | medium sentimentality

Paintings of venomous snakes cover the jar. The jar can hold up to a cup’s worth of liquid and any liquid placed in the jar and kept there for 24 hours becomes a poison with the properties of assassin’s blood (DMG). The poison retains all the liquid’s original properties, including taste, texture, and appearance, and its poisonous nature can only be detected via magic. A sip of the liquid counts as a full dose of the poison, but drinking more, up to the full cup, doesn’t increase the poison’s effects. Once you’ve added any amount of liquid into the jar, you can’t add more liquid until you pour out what’s already in the jar.

Paid

Instead of gaining the properties of assassin’s blood, the liquid gains the properties of an ingested poison of your choice from the Dungeon Master’s Guide. You must choose the type of poison when you first pour the liquid into the jar, or it defaults to assassin’s blood.

Overpaid

The liquid only needs to be in the jar for 12 hours to become the poison of your choice.

Source: The Gray Merchant of Asphodel