Dazzling Diamond Skin

This spell turns the flesh of a willing creature you touch into diamond. The target gains

• Immunity to radiant and necrotic damage
• Vulnerability to thunder damage
• The ability as a reaction to redirect  spells or magical affects aimed at only the target (that does not have the damage type thunder) to a creature the target can see with in 30 feet

If the target is in a brightly lit area the light shines and refracts through the diamond  dazzling enemies. Creatures reliant on sight have disadvantage on melee attack rolls against the target.