Phyrexian Altar, Bloodsoaked Champion, and Garrison Excavator

Prerequisites

• Phyrexian Altar on the battlefield
• Bloodsoaked Champion on the battlefield
• Garrison Excavator on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Bloodsoaked Champion, adding
2. Activate Bloodsoaked Champion by paying , returning it from your graveyard to the battlefield
3. Garrison Excavator triggers, creating a creature token
4. Activate Phyrexian Altar by sacrificing the creature token, adding
5. Repeat

Results

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