Saffi Eriksdotter, Fiendish Panda, and Altar of Dementia

Prerequisites

• Saffi Eriksdotter on the battlefield
• Fiendish Panda on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Fiendish Panda
2. Activate Altar of Dementia by sacrificing Fiendish Panda
3. When Fiendish Panda dies, its second ability and Saffi trigger
4. Resolve the Saffi trigger, returning Fiendish Panda from your graveyard to the battlefield
5. Resolve the Fiendish Panda trigger, returning Saffi from your graveyard to the battlefield
6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Fiendish Panda's power
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill