Amulet of the Spirit Naga

Wondrous item, very rare (requires attunement)

While wearing this platinum pendant, you are immune to the poisoned condition and have immunity to poison damage.

In addition, if you die while wearing the pendant, you immediately return to life with half your hit points. This property restores any missing body parts, neutralizes any poisons, and cures normal diseases afflicting you when you died, but has no effect if you die of old age. Once you're returned to life in this way, the amulet loses this property.

Your spirit can be saved. It can be reborn from the wastes of your mortal coil. Your spirit is immune to the errors of the living, to the frailty of mortal health. You are only truly alive when you cannot die.