Dragonhide

Legend, myth, folklore, all speak of the legendary toughness of a wyrm's hide; this spell allows you to call upon such strength. When you cast this spell, your skin erupts with draconic scales, making you extremely resistant to most forms of harm.

While active, you have resistance to bludgeoning, piercing, and slashing damage. Additionally, you gain the ability to halve any acid, cold, fire, lightning, or poison damage you take as a reaction.