Cheap creatures with flying like Blue-Black Draw Two This control deck cares about drawing your second card each turn, and the easiest way to do that is with Clue tokens
Its important to note that the activation cost of this ability costs one less to activate for each vampire under its owners control, making it a stellar choice for Vampire Commander decks such as the ever-popular Edgar Markov
Id just like to meet the mage who sat down one day and thought, Yeah, a huge dragon would make a great laboratory assistant. My gut says it was Sarkhan
This is a very serious, objective list, after all
It also starts with lots of loyalty and can immediately generate some blockers for your board, so its going to be extremely hard to get rid of once it hits the battlefield
Or perhaps even if they are, they know from experience that it doesn't win them any friends on game night