Cast Oathsworn Vampire either from your hand or graveyard by paying 1.
Edgar triggers, creating a 1/1 Vampire creature token.
When the Vampire and Oathsworn Vampire enter, Answered Prayers triggers twice, causing you to gain 2 life.
Activate Warren Soultrader twice by paying 2 life and sacrificing Oathsworn Vampire and the Vampire token, creating two Treasure tokens.
Activate two Treasures by tapping and sacrificing them, adding 1.
Repeat.
This clever loop turns a modest-looking graveyard recursion trick into a self-sustaining engine by tying life gain, mana production, and token generation together. Whenever you cast Oathsworn Vampire, Edgar Markov's *Eminence* ability automatically floods the board with a fresh 1/1 token alongside it, and Answered Prayers immediately converts those creature entries into the life gain required to let the Vampire crawl right back out of the graveyard. Meanwhile, Warren Soultrader gladly converts those bodies into Treasure tokens—which then crack for the exact mana needed to recast the Oathsworn Vampire and repeat the entire cycle indefinitely.