Saffi Eriksdotter + Altar of Dementia + Karmic Guide

Saffi Eriksdotter

Altar of Dementia

Karmic Guide

How it works

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