D&D 5th: Demon Tower of Madness
Casting Time: 1 action
Duration: 8 hours
Your touch imbues a willing creature with blessed vigor. It gains 3d8 + 6 temporary hit points for the duration. These hit points can exceed the creature’s hit point maximum, and they cannot be regained. If the creature takes any damage, these hit points are lost first.
At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the temporary hit points increase by 2d8 for each level above 3rd.