Xephy's Transfusion

Your touch transfers some of your own vitality to another. You touch one willing creature other than yourself. Expend one of your hit dice and add your spellcasting ability modifier. The creature is healed equal to half the amount rounded up.

Desperate Measures. If you no longer have hit dice remaining, you roll a D6 and add your Constitution modifier. The creature is healed equal to half the amount rounded up. You take one point of exhaustion for every time you heal someone in this manner when out of hit dice.