Barkskin

2nd-level transmutation

You crush the oak bark in your fist as you complete the utterance, and for a moment nothing happens. Then, a great groan emanates from you, almost like the creaking of a great oak. Bark emerges from the flesh of your hand, snakes up your arm, and overtakes your torso. You feel the bark encase you completely, offering its protection.

Casting Time: 1 action

Range: Touch

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

Duration: Concentration, up to 1 hour

Mul Effect: None

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.