Ragestone

Wonderous item, minor tier, very rare

This fist-sized stone is a molten orange colour. Staring at it shows what appears to be flames dancing inside, stirring the fury of those nearby.

As an action (or as a bonus action if your Strength score is 18 or higher) , you can crush the stone in your fist and unleash the immense well of anger within. For 1 minute, you gain the following features:

• You become overwhelmed by the intense desire to rip your foes in half. For the duration, you are unable to use any weapon other than your fists to make attacks.
• You are unable to cast or concentrate on spells.
• Your Strength score increases by 4, to a maximum of 28.
• Your unarmed strikes deal bludgeoning damage equal to 1d10 + your Strength modifier.
• When you take the Attack action and only make unarmed attacks, you can make two unarmed attacks as a bonus action. In addition, when you hit a creature with an unarmed attack, the creature must succeed on a Strength saving throw (DC = 8 + proficiency bonus + Strength modifier) or be pushed back 5 feet.
• Your speed increases by 15 feet. In addition, you can move up to 5 feet before you make an unarmed attack as part of the same attack.
• You subtract your proficiency bonus from all damage you take.
• You ignore any effects caused by exhaustion.

If you use more than one Ragestone before you finish a long rest, you must make a DC 22 Constitution saving throw, taking 1 level of exhaustion on a failed save.