Barbarous Bracer

This single bracer has been imbued with the spirit of a great barbarian. While worn, the user can cast the Enlarge Reduce spell on themselves from it. Once used it cannot be used again until after the wearer takes a long rest. 

However the enlargement only affects the arm in which it is being worn.  Until the spell ends, the target has advantage on Strength checks and Strength saving throws. Any weapon held in that hand also grows to match its new size. While this weapon is enlarged, the target's attacks with it deal 1d4 extra damage.  If you Critically fail an attack roll the attack hits a creature at random other than the intended target, including the user.

Notes: Social, Detection