Periapt of Proof against Poison

Wondrous item, rare (requires attunement)

• Weight: 1.0 lbs.

This delicate silver chain has a brilliant-cut black gem pendant. While you wear it, you have Immunity to the Poisoned condition and Poison damage

Source: Dungeon Master’s Guide (2024) p. 284. Available in the SRD and the Free Rules (2024)