Celestial Mantle

You wrap yourself in a shimmering celestial mantle that grants protective benefits to you and friendly creatures within 30 feet of you. For the duration, each affected creature gains the following benefits:

• They have resistance to radiant damage.
• When they start their turn in the spell's area, they regain hit points equal to your spellcasting ability modifier (minimum of 1), as they bask in the healing radiance.

Additionally, once during the spell's duration, as a reaction when an affected creature within the spell's range takes damage, you can grant that creature temporary hit points equal to 1d8 plus your spellcasting ability modifier.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the temporary hit points granted by the reaction increase by 1d8 for each slot level above 3rd.