Saffi Eriksdotter + Fiendish Panda + Altar of Dementia

Saffi Eriksdotter

Fiendish Panda

Altar of Dementia

How it works

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.