Accelerate

You accelerate a creature natural healing properties by bathing the wound in a holy light emanated from your palms. You must maintain concentration and the light over the wound for a minute, as long as the process isn't interrupted, the creature regains 1 hit point. This spell can be use continuously for 20 minutes, after which, you must wait 1h to be able to cast it again.

The amount of time the spell can be used before having to stop increases by 10 minutes when you reach 5th level (30 min), 11th level (40 min), and 17th level (50 min).