Hearthhull, the Worldseed + Clock of Omens + Eusocial Engineering + Perennial Behemoth + Yarok, the Desecrated

Hearthhull, the Worldseed

Clock of Omens

Eusocial Engineering

Perennial Behemoth

Yarok, the Desecrated

How it works

1. Activate a land by tapping it, adding at least 1.
2. Activate Hearthhull by paying 1, tapping it and sacrificing a land.
3. If Hearthhull has eight or more charge counters on it, it triggers, causing each opponent to lose 2 life.
4. Resolve the Hearthhull ability, causing you to draw two cards and allowing you to play an additional land this turn.
5. Play the land from your graveyard.
6. When the land enters the battlefield, Eusocial Engineering triggers twice due to Yarok, creating two artifact tokens.
7. Activate Clock of Omens by tapping the artifact tokens, untapping Hearthhull.
8. Repeat.

This elegant engine turns simple land recycling into a devastating loop by letting Hearthhull, the Worldseed sacrifice lands to draw cards and trigger its drain ability while fueling its own stat transformation. With Perennial Behemoth allowing you to continuously replay those sacrificed lands right back out of your graveyard, every drop feeds the engine's momentum. The entry of each land triggers Eusocial Engineering, whose landfall ability is doubled by Yarok, the Desecrated to instantly flood your board with Robot tokens. Finally, Clock of Omens harnesses those newly minted tokens to untap Hearthhull, resetting the entire machinery so you can repeat the process until your opponents are completely drained away.