Welcome to Skyrim Forums! Register now to participate using the 'Sign Up' button on the right. You may now register with your Facebook or Steam account!
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Did you unlock the shout by killing the Serpentine dragon in the lair at Solstheim? (the blue dragon that looks a lot different to the others). If so, you should have absorbed that specific dragon soul.
You can always join the Dawnguard (Obviously for those Dwarven crossbows and bolts etc) and then Serana can offer her full blood vampirism to you. This is what i have done.I personally believe the Dawnguard campaign is better however, but the Vampire Lord form is just amazing. So much better...