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
Simply put, no other draw card in MTG gives you as many cards for as little cost entirely on its own
Besides, a dragon that gives +1/+1 to other dragons would probably see play in dragon decks as is
It's a deck that leverages some very powerful cards in the midgame, such as Fable of the Mirror-Breaker and Shelodred, the Apocalypse
Secondly, what does this story have to do with Magic?" Great question
Other options include Troll and Toad, Card Cavern, Dave & Adams, Sell2BBNovelties, pawn shops, and more