Prototype Portal + Clock of Omens + Grinding Station + Ancient Den

Prerequisites

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Steps

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

Effects

• Infinite landfall triggers
• Infinite tapped land tokens