Amulet of Breaking

Wrought in the fiery forges of Asgard, this amulet, shaped like the mighty axe of Thor Thunderfist, bears the essence of the barbarian’s strength. Possessing the power to shatter nonmagical wooden objects, it grants its wielder the ability to unleash destruction upon obstacles in their path. The amulet's charges, akin to the unpredictable storms, renew with the rising sun.

Each dawn, roll 1d4 while saying “I must not break magical items made of wood” - the result determines the number of charges the amulet will hold that day.  The amulet allows the wearer to shatter any nonmagical wooden object as long as they wield an axe-like weapon.  To use the amulet, the wearer must hold an axe-like weapon (what counts is determined by the DM) and shout “BY THE POWER OF THOR!” as they swing the weapon.  If the wearer attempts to shatter a magical wooden object (either knowingly or unknowingly), the axe-like weapon rebounds and hits them in the nose doing 2d8 damage.