Every Dalish clan has a keeper, a wise mentor dedicated to preserving the elves' ancient lore. It is exceptionally uncommon for a keeper to teach anyone other than a fellow clan member about the unique Dalish understanding of nature magic, which focuses on control of the roots beneath the earth.
This specialization is only available if you have the Dragon Age: Origins - Awakening expansion pack installed. It also requires a minimum character level of 20. After acquiring the specialization, the character will gain access to four new talents
and be granted +2 magic and +3 mental resistance.
How to Unlock:
The specialization is made available by using the Manual: Keeper