Barkskin Ring

This ring has 3 charges, and it regains 1d3 expended charges daily at dawn. As a bonus action you can touch the ring and cast barkskin with a range of self. The spell lasts for its full duration or until you use another bonus action to touch the ring and drop the spell.

2nd-level transmutation

Casting Time: 1 action

Range: Touch

Components: V, S, M (a handful of oak bark)

Duration: Up to 1 hour

You touch a willing creature. Until the spell ends, the target’s skin has a rough, bark-like appearance, and the target’s AC can’t be less than 16, regardless of what kind of armor it is wearing.