Activate Woe Strider by sacrificing Bloodsoaked Champion.
When Bloodsoaked Champion dies, Pitiless Plunderer and Field of Souls trigger, creating a creature token and a Treasure token.
Resolve the Woe Strider ability.
Activate Woe Strider by sacrificing the creature token.
When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve the Woe Strider ability.
Activate the Treasures by tapping and sacrificing them, adding 1.
Activate Bloodsoaked Champion by paying 1, returning it from your graveyard to the battlefield.
Repeat.
This clever loop transforms simple graveyard recursion into an endless engine by leveraging a few key synergistic permanents. Woe Strider acts as the primary sacrifice outlet, while Bloodsoaked Champion pays off its own demise by repeatedly returning from the graveyard using the mana generated by Pitiless Plunderer's Treasure tokens. Meanwhile, Field of Souls acts as a crucial bonus producer, turning the Champion's death into an extra creature token that can be sacrificed to Woe Strider for extra scry value and additional death triggers.