Weapon (dagger) , Very Rare (unique)
Frenzy is a dagger that somehow has gained the ability to assault its foes with with swift and furious attacks.
While wielding the weapon you gain cumulative a +1 to hit and damage every time you successfully hit a target (foe/creature). The pluses fade if you miss or do not hit a target during your current turn. If the bonus reaches +4 or higher, you take one point of frenzy damage above +3 each time you hit.
In addition, you can make one attack with it as a Bonus Action on each of your turns. If thrown the weapon flies back into your hand immediately after hitting or missing.