Cleansing Crystal

You imbue a crystal with magic to absorb harmful influences. For the duration of the spell, when a creature carrying the crystal would take damage as a result of a spell or magical effect in the space it occupies at the start of its turn, the crystal reduces the damage it takes by [roll]2d6[/roll]. When the creature would make a saving throw to avoid an effect based on the space it occupies at the start of its turn, it has Advantage on the saving throw.

For the spell’s duration, when a creature carrying the crystal would take Necrotic, Poison, or Psychic damage, you can end the spell as a Reaction to give the creature Resistance to the triggering damage type until the end of its next turn.

Using a Higher-Level Spell Slot. When you cast this spell using a level 4+ spell slot, creatures within 10 feet of the crystal also gain its benefits.