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When this creature enters, each opponent loses 1 life and you gain 1 life.
Sacrifice a Food: Return this card from your graveyard to the battlefield.
If an effect refers to a Food, it means any Food artifact, not just a Food artifact token. For example, you can sacrifice Tough Cookie (an Artifact Creature — Food Golem) to activate Maraleaf Rider's ability (an ability with "Sacrifice a Food" in its cost).
In a Two-Headed Giant game, Cauldron Familiar's first ability causes the opposing team to lose 1 life twice, and you gain 1 life once.
You can't activate Cauldron Familiar's last ability unless it's in your graveyard.
