Thornbite Staff, Phyrexian Altar, and Godsire

Prerequisites

• Thornbite Staff on the battlefield
• Phyrexian Altar on the battlefield
• Godsire on the battlefield

Steps

1. Activate Godsire by tapping it, creating a creature token
2. Activate Phyrexian Altar by sacrificing the creature token
3. When the creature token dies, Godsire triggers due to its ability granted to it by Thornbite Staff, untapping Godsire
4. Repeat

Results

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