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, Al Bhed Salvagers 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 brilliant loop turns a simple undead soldier into an endless cycle of sacrifice and rebirth, draining your opponents dry in the process. Warren Soultrader provides the engine by converting creatures into Treasures, while Al Bhed Salvagers quietly drains the table and pads your life total every time anything bites the dust. That vital lifegain turns on Oathsworn Vampire's graveyard-casting condition, allowing it to crawl right back out for just {1}{B}. Meanwhile, Edgar Markov lurks in the background, utilizing his Eminence ability to pump out a free 1/1 Vampire token every time you cast that Vampire, fueling the sacrifice cost indefinitely.