Sword of Life Stealing

Generic Variant, major, rare (requires attunement)

When you attack a creature with this magic weapon and roll a 20 on the attack roll, that target takes an extra 10 necrotic damage if it isn’t a construct or an undead. You also gain 10 temporary hit points.

Note

According to the SRD, it is an extra 3d6 necrotic damage, although this is incorrect (https://rpg.stackexchange.com/a/174522/53884).

Variants:

Longsword of Life Stealing

  • Damage:
    • One-handed: 1d8 S
    • Two-handed: 1d10 S
  • Weight: 3.0 lbs.

Double-Bladed Scimitar of Life Stealing

  • Damage: 2d4 S
  • Weight: 6.0 lbs.

Greatsword of Life Stealing

  • Damage: 2d6 S
  • Weight: 6.0 lbs.

Rapier of Life Stealing

  • Damage: 1d8 P
  • Weight: 2.0 lbs.

Shortsword of Life Stealing

  • Damage: 1d6 P
  • Weight: 2.0 lbs.

Scimitar of Life Stealing

  • Damage: 1d6 S
  • Weight: 3.0 lbs.

Source: Dungeon Master’s Guide p. 206. Available in the SRD.