Martyr

You can use your own life force to empower your healing spells. You gain the following benefits:

• Increase your Intelligence, Wisdom, or Charisma by 1
• You gain one additional hit die equal to the largest die in your pool, if you later gain a larger hit die, this die increases to match the larger die. You do not increase your maximum hit points from this hit die.
• Any time you heal another player, you can expend a number of hit dice less than or equal to the level of the spell(1 for cantrips and other healing sources) to increase the healing by the result of the roll.