Surge of Healing

As an action, you touch a willing creature and cause a burst of accelerated healing energy. The affected creature may use their reaction to spend up to half of their Hit Dice. For each Hit Die spent in this way, the creature rolls the die and adds their Constitution modifier. The creature regains hit points equal to the total. The creature can decide to spend an additional Hit Die after each roll.

A creature that benefits from a Healing Surge can't do so again until they finish a short or long rest.

At Higher Levels: If cast at 1st Level or higher, you may spend 1 of your own hit die adding your own Constitution modifier. With a short rest, a creature affected by a Surge of Healing regains Hit Dice equal to its level or CR divided by four (minimum of one die).