Halo Fountain, Forensic Researcher, and Transdimensional Bovine

Prerequisites

• Halo Fountain on the battlefield
• Forensic Researcher on the battlefield
• Transdimensional Bovine on the battlefield

Steps

1. Activate Transdimensional Bovine by tapping it, adding Activate Forensic Researcher by tapping it, targeting Halo Fountain
2. Holding priority, activate Halo Fountain by paying , tapping it, and untapping Forensic Researcher and Transdimensional Bovine, causing you to draw a card
3. Resolve the Forensic Researcher ability, untapping Halo Fountain
4. Repeat

Results

• Infinite card draw
• Infinite draw triggers