Carnage, Crimson Chaos + Saffi Eriksdotter + Altar of Dementia

Carnage, Crimson Chaos

Saffi Eriksdotter

Altar of Dementia

How it works

1. Cast Carnage by paying 2.
2. When Carnage enters, it triggers, returning Saffi from your graveyard to the battlefield.
3. Activate Saffi by sacrificing it, targeting Carnage.
4. Activate Altar of Dementia by sacrificing Carnage.
5. When Carnage dies, Saffi triggers, returning Carnage from your graveyard to the battlefield.
6. When Carnage enters, it triggers, returning Saffi from your graveyard to the battlefield.
7. Resolve the Altar of Dementia ability.
8. Repeat from step 3.