Our opponents lose life and we scry according to the number of zombies we control
Second, and perhaps most importantly, one of the hallmarks of both Legacy and Vintage is powerful answerscards like Force of Willthat provide a natural safety valve in case combo decks get too out of control
You just need to include them
If they dont, you may put a creature card with equal or lesser toughness from your hand onto the battlefield

Advanced Search Sets Random Syntax Absorb Abuna's Chant Act of Aggression Aerial Predation Alchemist's Gift Angel's Mercy Appetite for the Unnatural Atarka's Command Awe Strike Bake into a Pie Battle Menu Battlefield Promotion Benevolent Offering Blessed Reversal Blessed Wine Blossoming Calm Blossoming Wreath Blunt the Assault Break of Day Breathe Your Last Butcher's Glee Cache Grab Call In a Professional Candles' Glow Chant of Vitu-Ghazi Chastise Cling to Dust Consecrate // Consume Consuming Corruption Cosmic Rebirth Cruel Feeding Crumb and Get It Crypt Incursion Cursebreak Dark Nourishment Dazzling Reflection Deadly Riposte Death of a Thousand Stings Decommission Depose // Deploy Depose // Deploy Desperate Lunge Dihada's Ploy Dissection Practice Divine Offering Double Dip Douse in Gloom Drag the Canal Dramatic Rescue Dromar's Charm Dryad's Caress Ebony Charm Erebos's Intervention Essence Extraction Everybody Lives

Sure, you get the infinite combo with Peregrin Took, but the board presence alone is worthwhile, especially with Ygra, Eater of All turning everything into food