Saffi Eriksdotter + Hero of the Dunes + Phantom Train

Saffi Eriksdotter

Hero of the Dunes

Phantom Train

How it works

1. Activate Saffi by sacrificing it, targeting Hero of the Dunes
2. Activate Phantom Train 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 Phantom Train ability.
6. Repeat.