The Lightning Thing

You accept the Tempest as a part of your will, and reach out to touch someone.

As an action, you touch one creature that is unconscious and making death saving throws. Roll [roll]1d20[/roll]. On a 19 or a 20, you force a powerful lightning bolt into the creature's heart. They instantly become conscious, they stand up if they were prone, gain 10 plus your spellcasting modifier hit points, and are considered under the effects of Haste for three turns.

On an 18 or lower, nothing happens.

You can perform this once per long rest.