The sun’s life-giving energy heals and sustains your body or that of a creature you touch. For the duration, you heal 1 hit point at the start of each of your turns whenever you are bathed in direct sunlight; 30 minutes or more of exposure also provides a day’s normal nourishment.
In dim light, the spell’s healing is reduced to 1 hit point per minute. Normal or magical darkness suppresses the spell’s effect entirely. While in sunlight, the target can ignore one level of exhaustion. (The level is only temporarily removed.)
Undead are especially vulnerable to this spell. If a targeted undead fails its Wisdom save, it gains the poisoned condition and suffers radiant damage instead of healing while in sunlight.