Oathbow

Weapon (longbow), very rare, requires attunement · 2014 rules, SRD 5.1

Bonus action: name a sworn enemy: advantage against it, ignore cover, extra 3d6 piercing; disadvantage with other weapons until it dies (7 days).

Also in the 2024 rules (SRD 5.2).

This page includes material from the System Reference Document 5.1 ("SRD 5.1") by Wizards of the Coast LLC, licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/legalcode).