The Blademaster’s Ring – A well-known sorcerer collects the weapons of fallen heroes. He shrinks them down before adding them to this eclectic ring. Once attuned, this ring grants a +5 proficiency bonus to attack rolls and damage rolls using a random weapon type: bludgeoning, piercing, or slashing. The bonus lasts for one day and randomizes at sunrise.
Image Source: Weapons Circle Map Item by dm142 on DeviantArt –
https://bit.ly/2BMZgHB