In Ultima Online, the Bonesmasher is a powerful one-handed mace known for its exceptional durability and effectiveness in combat. It is a rare artifact classified as a Mondain's Legacy Minor Artifact, meaning it can be obtained as a special drop from named monsters within specific dungeons related to the Mondain's Legacy expansion, or from looting Peerless bosses. The Bonesmasher is particularly useful for characters skilled in Mace Fighting, as it provides a +10 bonus to the skill. Additionally, the weapon has several other beneficial properties, including a 40% Hit Stamina Leech, which drains stamina from enemies to restore your own, and Self Repair 2, which gradually restores the weapon’s durability during use. Its physical damage output is significant, making it a formidable weapon in both PvE and PvP scenarios​