Interwoven Protection
Your body has natural bark which can be enhanced with armor:
You gain a +1 bonus to Armor Class.
You can only don armor with which you have proficiency. To don armor other than a shield, you must incorporate it into your body over the course of 1 long rest, during which you remain in contact with the armor. To doff armor, you must spend 1 long rest removing it. While enhancing your body in this manner, you may not use the Treelike Appearance or Long Limbed ancestral traits.
While you are conscious, the armor incorporated into your body can't be removed against your will.