Earthen Armour

You touch a willing creature. Until the spell ends, the target gains immunity to bludgeoning, force, lightning, piercing and slashing damage,  as well as resistance to acid, cold, fire, necrotic, radiant and thunder damage.

The spell ends early if the target dons armour.

For the duration of the spell, the target's speed is reduced by 10 ft. When the spell ends, the target gains 1 level of exhaustion.