Spell

Barkskin

2nd-level transmutation

Casting time: 1 action
Range: Touch
Components: V, S, M (a handful of oak bark)
Duration: Concentration, up to 1 hour
Concentration: Yes
Ritual: No
Classes: Druid, Ranger

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.