Aspect of Gluttony

You imbue a creature with dark power. Choose a willing creature within range. Whenever the creature gains magical healing, it can choose to instead add half the hit points that would be healed to their current temporary hit points. This comes with a cost; when the creature is targeted by a healing spell, no other creatures can gain the benefits of that casting of the spell. If the creature is under the effects of an Aspect of Lust spell, the temporary hit points the creature can add temporary hit points equal to the full healing of spells cast on them rather than just half.