"He wanted to know about the vampires of eastern http://www.uesp.net/wiki/Lore:Skyrim. I told him about the most powerful tribe, the Volkihar, paranoid and cruel, whose very breath could freeze their victims' blood in the veins." immortal blood.

would someone be willing to add this shout to higher level vampires? or explain to me how to. seems like a simple lore-friendly thing.

side note: must be real difficult to svck out frozen blood... mmm blood slushy!!!