Close Wound

As an action, you touch an allied creature and channel their inner life force to cause a surge of natural healing. If the target has at least 1 hit point, it can spend one of its Hit Dice, rolling the die and adding their Constitution modifier to the result. They regain hit points equal to the total (minimum of 0).

At Higher Levels

5th Level: The target can spend up to two of it's own Hit Dice at a time. Alternatively, you can spend your own Hit Dice to heal the target.

11th Level: The target can spend up to three of its own Hit Dice, and the range of the spell increases to 30 feet.

17th Level: the target can spend up to four of its own Hit Dice, and the casting time of the spell becomes a bonus action.