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 Provisioner triggers twice due to Yarok, creating two artifact tokens.
Activate Clock of Omens by tapping the artifact tokens, untapping Hearthhull.
Repeat.
This intricate loop transforms the sacrifice of a land into a self-sustaining engine of doom, fueled by the recursive synergy of Icetill Explorer letting you play lands right back out of your graveyard. As those lands enter, Tireless Provisioner floods your board with artifact tokens, whose creation is doubled by Yarok, the Desecrated to keep your artifact count overflowing. Clock of Omens then acts as the mechanical heart of the machine, utilizing those very tokens to untap Hearthhull, the Worldseed so it can sacrifice another land, draw cards, and drain your opponents' life totals through its relentless damage trigger.