Here's our pack: We'll grab a Rancid Rats for our card pool and pass the rest of the pack to the player on our left side again
Now that, my friends, is a psychological victory
But if you're dropping enough land, you could be Proliferating four or five times a turn, and that's valuable

1 Nurgle's ConscriptionNurgle's Conscription 1 ReverberateReverberate Sorceries (7) 1 Blasphemous ActBlasphemous Act 1 Blight GrenadeBlight Grenade 1 Decree of PainDecree of Pain 1 Deny RealityDeny Reality 1 Let the Galaxy BurnLet the Galaxy Burn 1 Mandate of AbaddonMandate of Abaddon 1 Past in FlamesPast in Flames Artifacts (10) 1 Assault SuitAssault Suit 1 Chromatic LanternChromatic Lantern 1 Commander's SphereCommander's Sphere 1 Drach'NyenDrach'Nyen 1 Sol RingSol Ring 1 Talisman of CreativityTalisman of Creativity 1 Talisman of DominanceTalisman of Dominance 1 Talisman of IndulgenceTalisman of Indulgence 1 Wayfarer's BaubleWayfarer's Bauble 1 Worn PowerstoneWorn Powerstone Enchantments (5) 1 Nurgle's RotNurgle's Rot 1 The Horus HeresyThe Horus Heresy 1 The Lost and the DamnedThe Lost and the Damned 1 The Ruinous PowersThe Ruinous Powers 1 Warstorm SurgeWarstorm Surge Lands (38) 1 Barren MoorBarren Moor 1 Command TowerCommand Tower 1 Crumbling NecropolisCrumbling Necropolis 1 Dismal BackwaterDismal Backwater 1 Evolving WildsEvolving Wilds 1 Exotic OrchardExotic Orchard 1 Foreboding RuinsForeboding Ruins 1 Forgotten CaveForgotten Cave 8 IslandIsland 1 Molten SlagheapMolten Slagheap 8 MountainMountain 1 Path of AncestryPath of Ancestry 1 Sunken HollowSunken Hollow 8 SwampSwamp 1 Swiftwater CliffsSwiftwater Cliffs 1 Temple of the False GodTemple of the False God 1 Terramorphic ExpanseTerramorphic Expanse Precon Card Upgrades Cards to Cut Knight Rampager Cut from 84.1% of decks Helbrute Cut from 82.9% of decks Noise Marine Cut from 81.1% of decks Dark Apostle Cut from 80.9% of decks Lucius the Eternal Cut from 79.6% of decks Khrn the Betrayer Cut from 78.5% of decks Poxwalkers Cut from 75.8% of decks Assault Suit Cut from 75.2% of decks Tzaangor Shaman Cut from 73.5% of decks Tallyman of Nurgle Cut from 73.1% of decks Mutalith Vortex Beast Cut from 71.8% of decks Abaddon the Despoiler Cut from 69.3% of decks Chaos Terminator Lord Cut from 65.7% of decks The Lost and the Damned Cut from 64.0% of decks Past in Flames Cut from 55.8% of decks The Horus Heresy Cut from 52.8% of decks Let the Galaxy Burn Cut from 49.7% of decks Bituminous Blast Cut from 42.3% of decks Drach'Nyen Cut from 42.2% of decks Deny Reality Cut from 41.7% of decks Bile Blight Cut from 41.7% of decks Cards to Add Kardur, Doomscourge Added to 47.1% of decks Rakdos, Lord of Riots Added to 44.8% of decks Raphael, Fiendish Savior Added to 44.5% of decks Rakdos, the Showstopper Added to 39.8% of decks Liliana's Contract Added to 33.0% of decks Dream Devourer Added to 30.9% of decks Varragoth, Bloodsky Sire Added to 30.7% of decks Archfiend of Depravity Added to 30.5% of decks Rune-Scarred Demon Added to 29.5% of decks Herald's Horn Added to 28.3% of decks Harvester of Souls Added to 27.9% of decks Demonic Counsel Added to 26.6% of decks Reflections of Littjara Added to 23.3% of decks Ardyn, the Usurper Added to 22.5% of decks Gyruda, Doom of Depths Added to 21.6% of decks Balor Added to 21.0% of decks Counterspell Added to 20.2% of decks Bloodgift Demon Added to 19.9% of decks Indulgent Tormentor Added to 19.0% of decks Rakdos, Patron of Chaos Added to 18.8% of decks Sower of Discord Added to 18.2% of decks Orcus, Prince of Undeath Added to 17.7% of decks Urza's Incubator Added to 17.2% of decks Lord Xander, the Collector Added to 16.6% of decks Bedevil Added to 16.0% of decks Terminate Added to 15.8% of decks Unholy Annex // Ritual Chamber Added to 14.5% of decks Rite of Replication Added to 14.4% of decks Hidetsugu and Kairi Added to 14.1% of decks Ghostly Flicker Added to 13.7% of decks Bloodletter of Aclazotz Added to 13.7% of decks Ob Nixilis, Unshackled Added to 13.2% of decks Rakdos Charm Added to 12.8% of decks Abyssal Harvester Added to 12.7% of decks The Balrog of Moria Added to 12.7% of decks Reaper from the Abyss Added to 12.4% of decks Ancient Cellarspawn Added to 12.1% of decks Whip of Erebos Added to 11.3% of decks Vilis, Broker of Blood Added to 11.0% of decks Overseer of the Damned Added to 11.0% of decks Rakdos Joins Up Added to 10.9% of decks Feed the Swarm Added to 10.6% of decks Demonlord Belzenlok Added to 10.5% of decks Nightscape Familiar Added to 10.5% of decks Burning-Rune Demon Added to 10.0% of decks Demonic Covenant Added to 9.9% of decks Desecration Demon Added to 9.8% of decks Rakshasa Debaser Added to 9.6% of decks Master of Cruelties Added to 9.31% of decks Kindred Dominance Added to 9.18% of decks Lands to Cut Forgotten Cave Cut from 27.0% of decks Barren Moor Cut from 25.2% of decks Molten Slagheap Cut from 24.8% of decks Temple of the False God Cut from 19.4% of decks Swiftwater Cliffs Cut from 17.5% of decks Evolving Wilds Cut from 16.8% of decks Dismal Backwater Cut from 15.1% of decks Terramorphic Expanse Cut from 13.8% of decks Exotic Orchard Cut from 9.2% of decks Foreboding Ruins Cut from 6.5% of decks Path of Ancestry Cut from 6.0% of decks Sunken Hollow Cut from 5.0% of decks Lands to Add Smoldering Marsh Added to 13.3% of decks Reliquary Tower Added to 9.8% of decks Dragonskull Summit Added to 8.28% of decks Myriad Landscape Added to 7.12% of decks Xander's Lounge Added to 7.12% of decks Seething Landscape Added to 6.99% of decks Bojuka Bog Added to 6.47% of decks Sulfurous Springs Added to 5.43% of decks Temple of Epiphany Added to 5.30% of decks

These triggers all occur at the end step, making Betor a slower, setup-heavy commander rather than an immediate table-shaker
Cacophony Scamp Proliferate on Cacophony Scamp is secondary to its damage-dealing effect upon death