Marai: The Long Dark
Casting a spell, whether arcane or divine, causes your body to channel forces beyond your understanding. This action causes pain and discomfort. Each time you cast a spell, you take 1d4 points of damage per the level of the spell you are attempting to cast. You may avoid this damage if you double your casting time: 1 immediate action becomes 1 action, 1 action becomes 1 round, etc. Cantrips and Orisons are not affected.