Ríastrad

You cannot contain the dark rage building within. In response to an extremely stressful situation, you involuntarily fly into a terrifying battle frenzy.

As the Ríastrad takes hold, your form contorts and twists inside your skin causing you to become more beast than man. Your shins crack backwards, shoulder blades hunch forwards, as your very body reshapes to accommodate your beastly, tensing form. The world itself response to this raw power, the air itself trashes around you in a path of destruction that recognises neither friend nor foe.

For the duration of this Ríastrad rage you can make a single melee weapon Attack as a Bonus Action on each of your turns after this one. You cannot be charmed or frightened. When this rage ends, you suffer one level of Exhaustion. To end the rage early you must succeed a DC 15 Wisdom saving throw. On a 20 or higher, you avoid taking a level of Exhaustion.