Kryx RPGThemesMonsters
Prerequisites: The ability to cast at least one spell

You gain the ability to consume your life force to power your spells. When you cast a spell that doesn’t restore your health, you can expend Health Dice equal to the spell’s mana cost, instead of using any mana or psi. For each Health Die spent in this way, roll the die and add your Constitution. Your lose health equal to the total.