While most of the creatures are vampires, there are four non-vampire creatures featured in the deck that either synergize with the life loss for Blood token-generation theme or help to win in an alternate, synergistic way
then shuffle your library, your opponents cant choose to search, so they wont shuffle
Through Innistrad, each Game Day was held four weekends after release (X+4), but starting with Dark Ascension, they were pushed ahead to three weekends after release i.e., the weekend after the new set-specific Pro Tour which is where they continue to sit to this day
Secondly, what does this story have to do with Magic?" Great question
Besides, a dragon that gives +1/+1 to other dragons would probably see play in dragon decks as is