Periapt of Wound Closure

Wondrous Item, Uncommon (Requires Attunement)

While wearing this pendant, you gain the following benefits.

Life Preservation. Whenever you make a

A player character must make a Death Saving Throw (also called a Death Save) if they start their turn with 0 Hit Points. See also Damage and Healing.

, you can change a roll of 9 or lower to a 10, turning a failed save into a successful one.

Natural Healing Boost. Whenever you roll a

Hit Point Dice, or Hit Dice for short, help determine a player character's Hit Point maximum, as explained in Creating a Character. Most monsters also have Hit Dice. A creature can spend Hit Dice during a Short Rest to regain Hit Points. See also Short Rest.

to regain

Hit Points (HP) are a measure of how difficult it is to kill or destroy a creature or an object. Damage reduces Hit Points, and healing restores them. You can't have more Hit Points than your Hit Point maximum, and you can't have less than 0. See also Breaking Objects and Damage and Healing.

, double the number of

Hit Points (HP) are a measure of how difficult it is to kill or destroy a creature or an object. Damage reduces Hit Points, and healing restores them. You can't have more Hit Points than your Hit Point maximum, and you can't have less than 0. See also Breaking Objects and Damage and Healing.

it restores.

Source: Dungeon Master's Guide, p. 284