Filigree Sages, Prototype Portal, Razortide Bridge, Tiller Engine, and Biomancer's Familiar

Prerequisites

• Filigree Sages on the battlefield
• Prototype Portal on the battlefield
• Razortide Bridge in exile
• Tiller Engine on the battlefield
• Biomancer's Familiar on the battlefield

Steps

1. Activate Prototype Portal by paying and tapping it, creating a token copy of Razortide Bridge
2. When Razortide Bridge enters the battlefield, Tiller Engine triggers, untapping it
3. Activate the Razortide Bridge token by tapping it, adding
4. Activate Filigree Sages by paying , untapping Prototype Portal
5. Repeat

Results

• Infinite landfall triggers
• Infinite tapped Razortide Bridge tokens