This infinite loop thrives on a clever recursion cycle between your graveyard and the battlefield, fueled by Ashnod's Altar as the engine that converts your creatures into a steady stream of colorless mana. When you sacrifice Fiend Hunter to the Altar, its departure triggers the return of Hero of the Dunes from exile, which immediately triggers its own entry ability to fish Fiend Hunter right back out of the graveyard. As Fiend Hunter re-enters, its trigger exiles Hero of the Dunes once more, leaving the board clear for you to sacrifice Fiend Hunter to the Altar and start all over again. Along the way, Hero of the Dunes even provides a helpful passive +1/+0 boost to your small creatures, turning this mechanical feedback loop into a lethal combination of infinite sacrifice, death, and entry triggers.