Halo Fountain, Argothian Elder, and Forensic Researcher

Prerequisites

• Halo Fountain on the battlefield
• Argothian Elder on the battlefield
• Forensic Researcher on the battlefield

Steps

1. Activate two lands by tapping them, adding at least
2. Activate Argothian Elder by tapping it, untapping the two lands
3. Activate Forensic Researcher by tapping it, targeting Halo Fountain
4. Holding priority, activate Halo Fountain by paying , tapping it, and untapping Forensic Researcher and Argothian Elder, causing you to draw a card
5. Resolve the Forensic Researcher ability, untapping Halo Fountain
6. Repeat

Results

• Infinite card draw
• Infinite draw triggers