Sword of Life Stealing

Weapon (Glaive, Greatsword, Longsword, Rapier, Scimitar, or Shortsword), rare, requires attunement · 2024 rules, SRD 5.2

When you attack a creature with this magic weapon and roll a 20 on the d20 for the attack roll, that target takes an extra 15 Necrotic damage if it isn'ta Construct or an Undead, and you gain Temporary Hit Points equal to the amount of Necrotic damage taken.

Also in the 2014 rules (SRD 5.1).

This page includes material from the System Reference Document 5.2 ("SRD 5.2") by Wizards of the Coast LLC, licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/legalcode).