Activate Hearthhull by paying 1, tapping it and sacrificing a land.
If Hearthhull has eight or more charge counters on it, it triggers, causing each opponent to lose 2 life.
Resolve the Hearthhull ability, causing you to draw two cards and allowing you to play an additional land this turn.
Play the land from your graveyard.
When the land enters the battlefield, Tireless Tracker triggers twice due to Elesh Norn, creating two artifact tokens.
Activate Clock of Omens by tapping the artifact tokens, untapping Hearthhull.
Repeat.
This intricate loop turns sacrificing your lands into a relentless engine for card draw and resource generation, fueled by Hearthhull, the Worldseed as both a sacrifice outlet and the ultimate life-draining win condition. Every time you sacrifice a land to fuel Hearthhull's ability—allowing you to draw cards and drop another land—Walk-In Closet // Forgotten Cellar steps in to let you effortlessly replay that land directly from your graveyard. As the land enters, Tireless Tracker triggers, and Elesh Norn, Mother of Machines doubles those landfall triggers to yield a double dose of artifact tokens. Finally, Clock of Omens harnesses those newly minted artifacts to untap Hearthhull, letting you repeat the entire cycle endlessly until your opponents are entirely drained of life.