Frozen Shell

Your control over your frozen heritage increases. You gain the following benefits:

• Increase your Intelligence or Charisma score by 1, to a maximum of 20.
• When you roll cold damage for a spell you cast, you can reroll any roll of 1 on the cold damage dice, but you must use the new roll, even if it is another 1.
• Whenever you cast a spell that deals cold damage, you cause a thin layer of ice to cover your skin until the end of your next turn. During this time, you have +1 to your AC.