Sphere of Vitality

5th-level abjuration

Casting Time:1 action

Range:Self (15-foot radius)

Components:V, S

Duration:Concentration, up to 10 minutes

A 15-foot-radius sphere of radiant energy extends out from you and moves with you, remaining centered on you. For the duration, each creature within the sphere regains 1 hit point at the start of each of their turns. If their current hit points are equal to their hit point maximum, they start to gain 1 temporary hit point at the start of each of their turns, to a maximum of 20 temporary hit points (although temporary hit points do not normally stack, those you gain through this spell do). A creature loses its temporary hit points when the spell ends. A creature who already has temporary hit points due to another effect cannot gain more temporary hit points than 20.

The sphere of vitality also provides protection to creatures within the sphere, guarding their life essence against magic.

Thus, creatures within the sphere also have advantage on saving throws against necromancy spells.