Coagulated Blood Armor

Channeling necromantic energy and controlling blood, a mist condenses surrounding your target and manifests a coagulated bloody film covering your target and their gear. They gain 5 temporary hit points for the duration. If a creature hits them with a melee attack while they still have these have temporary hit points, the creature takes 5 necrotic damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot.