Barkskin

Source: Player's Handbook (2024)

2nd Level Transmutation (Druid, Ranger)

Casting Time: Bonus Action Range: Touch Components: V, S, M (Handful of Oak Bark) Duration: 1 hour

You touch a willing creature. Until the spell ends, the target’s skin assumes a bark-like appearance, and the target has an Armor Class of 17 if its AC is lower than that.