Cast Oathsworn Vampire either from your hand or graveyard by paying 1.
Edgar triggers, creating a 1/1 Vampire creature token.
Activate Warren Soultrader by paying 1 life and sacrificing Oathsworn Vampire.
When Oathsworn Vampire dies, Vengeful Bloodwitch triggers, causing target opponent to lose 1 life and you to gain 1 life.
Resolve the Warren Soultrader ability, creating a Treasure token.
Repeat steps 3 through 5 once, sacrificing the Vampire token instead.
Activate two Treasures by tapping and sacrificing them, adding 1.
Repeat.
This relentless loop turns a simple cycle of sacrifice and rebirth into a lethal engine, fueled by Warren Soultrader turning your creatures into mana and Treasures. Vengeful Bloodwitch sits back and drains your opponent's life total with every single sacrifice, easily sustaining the life costs while turning your board deaths into a steady stream of gain. Meanwhile, Edgar Markov lurks in the background, reliably churning out a fresh 1/1 Vampire token via *Eminence* every time you cast a creature, keeping your supply of sacrifice fodder fully stocked. That constant stream of creatures and lifegain is precisely what allows Oathsworn Vampire to keep crawling back from your graveyard for just two mana, sealing your opponent's doom through sheer persistence.