Bestow Grace

You hum a long-lost tune, and your divine touch calls forth a surge of the target creature's life force. If the target creature has at least 1 hit point, they can spend one of their hit dice, rolling the die and adding their Constitution modifier to the result. They regain hit points equal to the total (minimum of 0).

If a creature has benefited from this spell once, it cannot benefit again until after the caster has taken a short or long rest.

At higher levels: The target creature can spend one additional hit die on a casting of this spell when you reach 5th level (2hd + CON modifier), 11th level (3hd + CON modifier), and 17th level (4hd + CON modifier).