Aurelia, the Warleader, Whisper, Blood Liturgist, Ghoulcaller Gisa, and Phyrexian Altar

Prerequisites

• Aurelia, the Warleader on the battlefield
• Whisper, Blood Liturgist on the battlefield
• Ghoulcaller Gisa on the battlefield
• Phyrexian Altar on the battlefield
• Gisa and Whisper do not have summoning sickness
• available

Steps

1. Declare Aurelia as an attacker
2. Aurelia triggers, untapping all creatures you control and causing you to get an additional combat phase after this one
3. Activate Ghoulcaller Gisa by paying , tapping it and sacrificing Aurelia, creating at least three 2/2 Zombie creature tokens
4. Activate Whisper by tapping it and sacrificing two Zombies, returning Aurelia from your graveyard to the battlefield
5. Move to your next combat phase
6. Activate Phyrexian Altar by sacrificing a Zombie, adding
7. Repeat

Results

• Infinite combat phases
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control