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 Roaming Throne, creating two artifact tokens.
Activate Clock of Omens by tapping the artifact tokens, untapping Hearthhull.
Repeat.
This ingenious loop turns Hearthhull, the Worldseed into a self-sustaining engine by sacrificing lands to fuel its card-drawing ability and then utilizing Crucible of Worlds to replay them straight from your graveyard. Every time a land drops, Tireless Tracker springs into action, and with Roaming Throne doubling those landfall triggers, you are flooded with Clue tokens to feed into Clock of Omens. By tapping those freshly minted artifacts to untap Hearthhull, the Clock keeps the gears turning indefinitely, draining your opponents out of the game through Hearthhull's relentless life-loss trigger while netting you limitless cards and land drops.