Font of Life

You become a spring of healing and life, and excel at keeping things alive. Life blossoms in your step, and death flees in your wake. You gain the following benefits:

• Increase your Wisdom score by 1, to a maximum of 20.
• When you stabilize a creature that is at 0 Hit Points, the creature can make a Constitution saving throw (DC 8 + half the creature's level or CR (rounded up)). On a success, the creature regains Hit Points equal to your Wisdom modifier. You can use this ability a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.
• Whenever you cast a spell that restores hit points, or grants temporary hit points, roll a d12. On a 12, you do not expend a spell slot in order to cast the spell, so long as the spell is of 3rd level or lower. On a 6, you expend the spell slot as normal, but heal for the maximum amount at the level cast.. On all other rolls, the spell is cast as normal.