Prototype Portal + Clock of Omens + Grinding Station + Great Furnace

Prerequisites

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Steps

1. 1Activate Prototype Portal by paying and tapping it, creating a token copy of Great Furnace.
2. 2The Great Furnace token enters, triggering Grinding Station, untapping Grinding Station.
3. 3Activate Clock of Omens by tapping the Great Furnace token and Grinding Station, untapping Prototype Portal.
4. 4Repeat.

Effects

• Infinite landfall triggers
• Infinite tapped land tokens