Spell Master

You've learned how to imbue extra power into your spells. You gain the following benefits.

• When you score a Critical hit with a spell, you can roll one additional damage die for the spell you cast.
• Before you make a spell attack, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the spell's damage. Once you successfully use this feature, you cannot do so again until the start of your next turn.