Recklessness

Weapon Magical, Heavy, Two-Handed Legendary (this item requires attunement) [Must be attuned by a barbarian]

Your Strength ability score is increased by +2. Your Constitution ability score is increased by +2. While wielding this weapon, your rage damage is doubled, but all attacks made with this weapon while you are not raging are done with disadvantage.

Cost: Recklessness is highly sought after by many barbarian lords, reaching upwards of 300,000GP. Weight: 10lb