Body of Briar

Enchant your body with growths of Bloody sharp vines and thorns; for a duration of a minute you gain a +2 to your ac and upon being hit with a melee attack bursting thorns shoot out towards the attacker dealing 2d6 piercing damage and dispelling upon being hit.

At higher levels: every 2 levels above 3rd you can be hit 1 more time before being dispelled.