Activate Woe Strider by sacrificing the undying creature.
When the undying creature dies, its undying ability triggers, returning itself from your graveyard to the battlefield without a +1/+1 counter on it due to Blightbeetle.
Resolve the Woe Strider ability.
Repeat from step 2.
This loop is a masterclass in turning a restriction into a devastating engine. By using Zedruu the Greathearted's activated ability to hand Blightbeetle over to an opponent, you weaponize the beetle's passive static ability—normally meant for defense—to suppress the +1/+1 counters that would otherwise shut down your recursive creatures. With the board state prepped, Woe Strider acts as both the ultimate sacrifice outlet to trigger infinite deaths and scries, and a recurring threat itself thanks to its escape mechanic.