The DLC package contains 2 special resource cards which can be redeemed for a small boost to help Harkyn get started:
Spell Points Card
Play this card to achieve 1 additional Spell Point.
Play this card to achieve 3 small sealed runes.
The resource cards will be added to the inventory of each of your characters / savegames as soon as the DLC is installed. By using a resource card you will be rewarded with the corresponding resource and the card gets destroyed.