Bloodwhisper Cauldron

Wondrous Item, very rare (requires attunement)

This ancient, oxidized cauldron sits on three stubby legs and has images of sacrifice and ritual cast into its iron sides. When filled with concoctions that contain blood, the bubbling cauldron seems to whisper secrets of ancient power to those bold enough to listen. Once a day, a creature attuned to this evil vessel can use an action to slake their thirst and choose one of the following effects:

• Restore 20 hit points. This use of the cauldron also removes any diseases, exhaustion, and resets all spells and abilities as though the user had just completed a long rest. The user must complete two long rests normally before using this ability again.
• See the immediate future. For 1 minute, the imbiber has advantage on saving throws and ability checks.
• Spew a miasma of vaporous blood in a 30-foot cone. Creatures caught in the bloody spray must make a successful DC 14 Consititution saving throw or be poisoned for 1 minute.

Destruction. A bloodwhisper cauldron can be destroyed by being filled with the freely given blood of intelligent, Good creatures and then having two clerics of good-aligned deities of at least 12th level channel positive energy into it while a third casts dispel evil and good on the cauldron.