Activate Warren Soultrader by paying 1 life and sacrificing another creature, creating a Treasure token and a 1/1 Thopter artifact creature token.
When the Thopter and Treasure enter the battlefield, Haliya triggers twice, causing you to gain 2 life.
Repeat.
This clever loop turns your sacrifices into an ever-growing swarm of artifacts and life. **Warren Soultrader** fuels the engine by paying life to sacrifice a creature, but **Stridehangar Automaton** completely breaks the math by turning every single created artifact token—including the Treasure itself—into both a Treasure and an additional 1/1 Thopter token. Meanwhile, **Haliya, Guided by Light** happily watches this mechanical birth by triggering its life-gaining ability off every single entering permanent, easily clearing the threshold to keep your life total healthy while you churn through your deck at the end step.