Necrotic Naginata (5e Equipment)

Weapon (naginata), rare (major) (requires attunement)

This naginata features an ebony handle wrapped with white leather, while the blade itself always smells of blood and seawater. Legend has it that the first one made was used by Leviathan itself.

When you hit with an attack using this magic naginata, the target takes an extra 1d8 necrotic damage. Additionally, a hit creature's hit point maximum is reduced by an amount equal to the damage it takes from attacks using this weapon.