This clever loop turns the graveyard-recursion of Nim Devourer into a self-sustaining engine by leveraging the passive power of Parallel Lives to double your resource generation. When you pay to return Nim Devourer from the graveyard and immediately sacrifice it, Pitiless Plunderer watches it die and triggers to generate not just one, but two Treasure tokens thanks to the replacement effect of Parallel Lives. Sacrificing those two doubled Treasures provides the exact amount of mana needed to pay Nim Devourer's upkeep activation cost again, letting you repeat the cycle indefinitely to trigger endless deaths, leaves-the-battlefield, and enters-the-battlefield events.