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 Fractured Realm, creating two artifact tokens.
Activate Clock of Omens by tapping the artifact tokens, untapping Hearthhull.
Repeat.
This clever engine uses Hearthhull, the Worldseed as a sacrifice outlet to draw cards and drain your opponents, fueled endlessly by the lands you recycle. Perennial Behemoth ensures your graveyard is a boundless supply depot for those sacrificed lands, while Tireless Tracker turns every land drop into a pair of Clue tokens thanks to the doubling power of Mirror Room // Fractured Realm. Finally, Clock of Omens ties the whole loop together by tapping those newly minted artifacts to untap Hearthhull, letting you repeat the entire process indefinitely until your opponents are whittled away to nothing.