Dr. Falren's Magical Anesthesia

You manipulate the weave in such a way that you offer a willing non-hostile creature immediate pain relief and put them into an induced coma. When targeting a non-hostile unwilling creature, they must make a Constitution saving throw. Creatures under the effect of this spell experience the following: 

• The creature is now Unconscious and cannot be woken up by normal means even if they take damage.
• Any pain the creature was feeling is now significantly diminished for the duration. This lasts for 4 hours after the spell ends.
• The creature cannot benefit from a short or long rest during the duration. 
• The creature restores a number of hit points equal to their Constitution modifier (minimum of 1) every 10 minutes.

At Higher Levels. When you cast this spell with a level of 3rd level or higher, the duration of this spell increases by 2 hours for each spell slot above 2nd level.