Crystalline Carapace

Clusters of magical crystal gemstones form on your body, providing a protective outer layer against harm. Until the spell ends you have Advantage on saving throws against spells, and spell attack rolls against you have Disadvantage.

If you are hit by a spell that requires a ranged attack roll, you may reduce the damage. The reduction equals 1d10 plus your spellcasting ability modifier. If you reduce the damage to 0, you may also use a Reaction to reflect the spell, turning the caster into the target. If you are targeted by a Magic Missile spell, the reflection happens automatically.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, increase the reduction amount by 1d10 for each slot level above 4th.