Casper's Demonic Visage

- You gain 50 temporary hit points. If any of these remain when the spell ends, they are lost.

- You have advantage on attack rolls that you make with simple and martial weapons.
- When you hit a target with a weapon attack, that target takes an extra 3d12 force
damage.
- For the duration of the spell you gain resistance to piercing, slashing, and bludgeoning damage from non magic weapons. You also gain immunity from fire and necrotic damage.
- You have proficiency with all armor, shields, simple weapons, and martial weapons.
- You have proficiency in Strength and Constitution saving throws.
- You can attack twice, instead of once, when you take the Attack action on your turn. You ignore this benefit if you already have a feature, like Extra Attack, that gives you extra attacks.
- An aura of frost radiates around you, whenever an enemy starts it's turn within 15 feet of you they must make a con save vs your spell dc. If they fail they take 4d6 cold damage, or half on a success.
- You gain advantage on concentration saves for the spells "Summon Lesser Demon" and "Summon Greater Demon".

Immediately after the spell ends, you must succeed on a DC 15 Constitution saving throw or suffer one level of exhaustion.

When using the heart of a Pit Fiend instead of another demon, you may attack three times instead of two, and you gain resistance to bludgeoning, piercing, and slashing. The heart of a Pit Fiend is consumed when used this way.