Stoneskin

Level 4 Transmutation (Druid, Ranger, Sorcerer, Wizard)
Casting Time: Action
Range: Touch
Components: V, S, M (diamond dust worth 100+ GP, which the spell consumes)
Duration: Concentration, up to 1 hour

Until the spell ends, one willing creature you touch has Resistance to Bludgeoning, Piercing, and Slashing damage.