Nowhere. The only DLC that features Morrigan is "Witch Hunt".
Chat with our AI personalities
In the Silerite Mines in with the dragon tamer, but be careful you can only get there once so remember to grab it
You have to go through the story befriending Morrigan, then you go to camp and ask her if she can teach someone else to be a Shapechanger. Follow the prompts and you now have that specialization!
Dragon Age Origins is for PS3, Xbox-360, And PC.
The answer is yes. Dragon Age Origins is downloadable to PC through this site: http://www.ea.com/games/dragon-age-origins As well as a few others most likely : )
From the Dragon Age Origins main menu, there's an option called 'Other Campaigns' which is where you launch the Golems of Amgarrak and Witch Hunt adventures. When you select one, you'll be given the option to create a new character or import from another module. You'll be able to import your character from any previous save, including a character from Origins who was imported into Awakening.