From there, whenever you attack with a Flier, you can have it become a four-power Dragon until end of turn
The four mechanics are populate, madness, flashback, and morph, which were accidentally revealed by a product listing two weeks ago
His Mardu colour identity is important too, allowing the deck to break outside of the usual Rakdos colours for vampires and include all the white vampires that have been printed in recent times, as well as providing access to enchantment removal which historically black and red have struggled with
That was the initial design
Just an incredible card for card advantage and flexibility and for thinning out the deck, and opened up a ton of different deck design options because of it
I realize that this sounds a lot like unfair combo decks but the difference is that the mana an unfair combo generates is temporary to produce an instant win where Ramp's advantage is turned into permanents