Activate Clock of Omens by tapping Immovable Rod and another artifact, untapping Immovable Rod.
Immovable Rod triggers, causing you to venture into the Cave Entrance room of Lost Mine of Phandelver, causing you to scry 1.
Activate Clock of Omens by tapping Immovable Rod and another artifact, untapping Immovable Rod.
Immovable Rod triggers, causing you to venture into the Mine Tunnels room of Lost Mine of Phandelver, and create two Food, two Clue, and two Treasure artifact tokens.
Activate Clock of Omens by tapping Immovable Rod and another artifact, untapping Immovable Rod.
Immovable Rod triggers, causing you to venture into the Dark Pool room of Lost Mine of Phandelver, causing each opponent to lose 1 life and you to gain 1 life.
Activate Clock of Omens by tapping Immovable Rod and another artifact, untapping Immovable Rod.
Immovable Rod triggers, causing you to venture into the Temple of Dumathoin room of Lost Mine of Phandelver, causing you to draw a card and complete Lost Mine of Phandelver.
Repeat.
This engine loops by using Clock of Omens to repeatedly untap Immovable Rod, which in turn triggers every time it becomes untapped to venture deeper into the dungeon. The real brilliance of the setup lies in Academy Manufactor and Parallel Lives working in tandem to exponentially multiply the token rewards generated by the dungeon's Mine Tunnels room, turning every single token-producing step into an avalanche of Clues, Foods, and Treasures. Because Clock of Omens only requires any two untapped artifacts to pay its cost, the enormous wave of newly minted tokens can immediately be fed right back into the clock to keep the cycle going infinitely.