Saffi Eriksdotter + Fiendish Panda + Yahenni, Undying Partisan

Saffi Eriksdotter

Fiendish Panda

Yahenni, Undying Partisan

How it works

1. Activate Saffi by sacrificing it, targeting Fiendish Panda.
2. Activate Yahenni 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 Yahenni ability.
7. Repeat.