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 engine transforms your lands into a self-sustaining loop of sacrifice and discovery, all powered by Hearthhull, the Worldseed as it chews through your mana base to draw cards and drain the table. Crucible of Worlds makes this sacrifice entirely painless by letting you replay those lands straight from the graveyard, which in turn feeds Tireless Tracker to continuously generate Clue tokens. Elesh Norn, Mother of Machines doubles those landfall triggers, ensuring you get an absolute surplus of artifacts every time a land hits the board. Finally, Clock of Omens acts as the perfect mechanical heart of the operation, tapping down those freshly minted Clues to untap Hearthhull so you can repeat the entire devastating cycle.