Saffi Eriksdotter + Gerrard, Weatherlight Hero + Phyrexian Altar

Saffi Eriksdotter

Gerrard, Weatherlight Hero

Phyrexian Altar

How it works

1. Activate Saffi Erikdotter by sacrificing itself, making it so the next time Gerrard dies this turn it will be returned to the battlefield.
2. Activate Phyrexian Altar by sacrificing Gerrard, adding one mana of any color.
3. Saffi Eriksdotter and Gerrard triggers.
4. Resolve the Saffi Eriksdotter trigger, returning Gerrard to the battlefield.
5. Resolve the Gerrard trigger, returning all artifact and creature cards that were put into your graveyard this turn from your graveyard onto the battlefield.
6. Repeat.