Mawling Maul Light Hammer (uncommon)

Burning with ravenous hunger and unquenchable hanger, this mimic-infused weapon struggles relentlessly against the sturdy iron chains that bind it. Loosening the chains stimulates the weapon's digestive juices which, if not quenched, can have caustic consequences for its wielder.

Mimic Unleashed: As a bonus action while holding the hammer, you can loosen the chains restraining the mimic, leaving it free to mercilessly maul your foes. While the chains are loose, the hammer bites targets that it hits, dealing an extra 1d4 piercing damage. If you end your turn holding the hammer while the chains are loose, and you didn't hit a creature with an attack using the hammer that turn, the hammer's excess digestive juices pour down the handle and you take 1d4 acid damage. The chains tighten on their own if the hammer isn't held for 1 minute or if you use a bonus action to tighten the chains while holding the weapon.

Light: A light weapon is small and easy to handle, making it ideal for use when fighting with two weapons.

Thrown: If a weapon has the Thrown property, you can throw the weapon to make a ranged attack. If the weapon is a melee weapon, you use the same ability modifier for that attack roll and damage roll that you would use for a melee attack with the weapon. For example, if you throw a handaxe, you use your Strength, but if you throw a dagger, you can use either your Strength or your Dexterity, since the dagger has the Finesse property.

Range: A weapon that can be used to make a ranged attack has a range shown in parentheses after the ammunition or thrown property. The range lists two numbers. The first is the weapon's normal range in feet, and the second indicates the weapon's maximum range. When attacking a target beyond normal range, you have disadvantage on the attack roll. You can't attack a target beyond the weapon's long range.

Proficiency: simple, light hammer Source: Heliana's Guide to Monster Hunting - Part One p. 451, Player's Handbook (2014) p. 149