Blood Rain

You cause it to rain blood in a 60 foot cylinder centered on you. Whenever a creature starts its turn in the rain, you can choose to empower them with false life (no action required), granting them 1d4+1 temporary hit points.

At Higher Levels. Whenever you cast this spell using a 3rd level slot of higher, the temporary hit points increase by 1d4 for every slot level above 2nd.