Saffi Eriksdotter + Altar of Dementia + Hero of the Dunes

Saffi Eriksdotter

Altar of Dementia

Hero of the Dunes

How it works

1. Activate Saffi by sacrificing it, targeting Hero of the Dunes
2. Activate Altar of Dementia by sacrificing Hero of the Dunes
3. When Hero of the Dunes dies, Saffi triggers, returning Hero of the Dunes from your graveyard to the battlefield.
4. When Hero of the Dunes enters, it triggers, returning Saffi from your graveyard to the battlefield.
5. Resolve the Altar of Dementia ability.
6. Repeat.