Baru, Wurmspeaker, Thornbite Staff, and Phyrexian Altar

Prerequisites

• Baru, Wurmspeaker on the battlefield
• Thornbite Staff on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Baru by paying and tapping it, creating a 4/4 Wurm creature token
2. Activate Phyrexian Altar by sacrificing the Wurm, adding
3. The Wurm dies, triggering Baru, untapping Baru
4. Repeat

Results

• Infinite death triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers