Peregrin Took + Cauldron Familiar + Phyrexian Altar + Desecrated Tomb

Peregrin Took

Cauldron Familiar

Phyrexian Altar

Desecrated Tomb

How it works

1. Activate Phyrexian Altar by sacrificing Cauldron Familiar, adding one mana of any color.
2. Activate Cauldron Familiar by sacrificing a Food, returning Cauldron Familiar to the battlefield from your graveyard.
3. Cauldron Familiar and Desecrated Tomb trigger.
4. Resolve the Desecrated Tomb trigger, creating a creature token and a Food token.
5. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
6. Repeat