Crystal Guardian

A nature spirit answers your call and transforms you into a powerful guardian. The transformation lasts until the spell ends.

Stone Titan.  Crystal like fragments cover and elongate out of your body obscuring your features, you gain the following benefits:

• You gain 10 temporary hit points.
• You make Constitution saving throws with advantage
• Your melee weapon attacks deal an extra 1d6 force damage on a hit
• A creature that touches you or hits you with a melee attack while within 5 feet of it takes 1d10 piercing damage.