The Adamant Spanner is a large, black, metal wrench with four green gems going around the head of it. All four of the gems are imbued with the spell, Repairs.
You have a +1 bonus to attack and damage rolls made with this magic weapon.
Repairs - You touch a damaged object or construct and attempt to restore it to a functional state. Up to 5 feet of the object or construct is affected at a time, and it regains hit points equal to 1d10 + your spellcasting modifier. This spell can repair magical objects, but cannot restore magic to an object.
Proficiency with a Mace allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Sap. If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.
Notes: Bonus: Magic, Damage, Combat, Sap