Prototype Portal, Clock of Omens, Grinding Station, and Tree of Tales

Prerequisites

• Prototype Portal on the battlefield
• Clock of Omens on the battlefield
• Grinding Station on the battlefield
• Tree of Tales in exile

Steps

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

Results

• Infinite landfall triggers
• Infinite tapped land tokens