Bloodtithe Harvester As both a Standard and Pioneer staple, Bloodtithe Harvester has enjoyed a lot of success since it was printed, and it has one of the more winning resumes of any Vampire
You could even broaden your deck to be just Army typal, letting you include the War of the Spark Zombie Armys
The glut on the market forced Wizards to destroy large quantities of the product that went unsold, and as a result, they shelved Rosewater's plans for Unglued 2: The Obligatory Sequel
Even if you drop it after an opponents Dockside Extortionist you can sacrifice it to destroy all artifacts with a mana value equal to the amount of mana you want to pump into it, or for zero if you need to get rid of those pesky tokens
Gray Merchant of Asphodel forces your opponents to lose X life, equal to your devotion to black, and then you gain the total amount of life lost