Since Urza just gave us an artifact creature matters build in The Brothers' War, with more colors and better abilities, that may not get as much play, but she is also ideal in the 99 of that brew as well
Edgar Markov has an eminence ability that creates a 1/1 black Vampire token whenever you cast a vampire spell, so you can spawn a lot of creatures to put pressure on your opponent
Tree of Perdition + Tree of Redemption Tree of Perdition and Tree of Redemption focus on exchanging a players life total with these creatures toughness
On the other hand, split cards, MDFCs and adventure cards from Eldraine let you cast a whole other spell, rather than pay an alternative cost
It also happens to have eaten Whites lunch and taken the cheap efficient evasive creatures, which make it a threat when it goes on the aggressive with its flying squadron
I Draw cards equal to the greatest power among creatures you control