Elemental Armor

You cover yourself with a layer of elemental energy that shields you from incoming attacks. You gain 10 temporary hit points for the duration. Choose one damage type when you cast this spell: acid, fire, cold, or lightning. If a creature hits you with a melee attack while you have these hit points, that creature takes 1d6 damage of that type.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the temporary hit points granted by this spell increase by 5 and the damage dealt by this spell increases by 1d6 for every spell level above 2nd.