Briarguard
Armor (any medium or heavy armor), uncommon (requires attunement)
Clusters of heinous spikes spring from the cuirass, pauldrons and vambraces of this wooden armor.
The armor has 3 charges, and regains all expended charges daily at dawn. As an action while wearing the armor, you can expend 1 charge to gain 5 temporary hit points. If a creature hits you with a melee attack while you have these hit points, the creature takes 5 piercing damage.
The miraculously regrowing armor of Lorb the Pincushion was worth its weight in wood, out of which it was made.