Greater Dragonmark (Shadow)

You have manifested a greater dragonmark. You gain the following benefits:

• You learn a 2nd and 3rd level spell of your choice from the wizard spell list. The spells must be from the Illusion or Enchantment schools. You learn those spell and can cast them through your mark. Once you cast them, you must finish a short or long rest before you can cast them again through the mark. 
• When you cast a spell through your mark, you can expend one of your Hit Dice and roll it. Add the result to the duration of the spell, ie a spell lasting 1 minute gets +X where X is the number rolled on the die.