Your dragonmark has grown in size and power. This enhances your existing dragonmark, and the benefits are based on the mark that you already possess. A greater aberrant dragonmark provides the following benefits:

• The die type of your dragonmarked Intuition Die increases by one (for example, from a d4 to a d6).
• Increase your Constitution score by 1, to a maximum of 20.
• You learn two spells of fourth level or lower from the Sorcerer spell list, each of which you can cast at its lowest level once without expending a spell slot or using a material component. The spellcasting ability for these spells is Constitution. You must complete a long rest to regain the use of these spells.
• You can increase the power of your aberrant spells at the risk of your own vitality. When you cast a spell with your aberrant mark, you can use one of your Hit Dice to increase the spell’s level by 1. Immediately after you cast the spell, roll the Hit Die. You take damage equal to the number rolled.