Activate a Treasure by tapping and sacrificing it, adding .
Krenko triggers, causing you to pay to create a 1/1 Goblin creature token with haste.
Activate Woe Strider by sacrificing the Goblin token.
When the Goblin dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve the Woe Strider ability, causing you to scry 1.
Repeat.
This loop creates an infinite self-sustaining engine built around sacrifice and recycling. Woe Strider acts as the outlet by letting you sacrifice creatures at will to fuel the engine and scry through your deck, while Pitiless Plunderer converts each of those deaths into a fresh Treasure token. Tapping and sacrificing that Treasure feeds the mana required for Krenko, Baron of Tin Street to trigger its ability—subsidized by Krenko's passive haste and artifact sacrifice utility—allowing you to churn out a new hasty Goblin token every time an artifact hits the graveyard.