For two Blue and Two Black, you can have a player lose X life and mill X cards, where X is the number of Zombies you control
" What The Bans Mean For Disney Lorcana Bans Remove A Potent Card Combo From The Game Both bans are somewhat unexpected
Theres no way to discard a creature card with madness, cast it, and sacrifice it to pay for both of Ruthless Disposals additional costs

Full Decklist: 4 Mountain 6 Plains 7 Forest Abraded Bluffs Ancient Greenwarden Angel of Indemnity Angel of the Ruins Arcane Signet Avenger of Zendikar Bitter Reunion Bovine Intervention Bristling Backwoods Cactus Preserve Cataclysmic Prospecting Chromatic Lantern Command Tower Conduit Pylons Crawling Sensation Creosote Heath Decimate Descend upon the Sinful Desert of the Fervent Desert of the Indomitable Desert of the True Dune Chanter Dunes of the Dead Eccentric Farmer Electric Revelation Elvish Rejuvenator Embrace the Unknown Escape to the Wilds Evolving Wilds Explore Genesis Hydra Harrow Hashep Oasis Hazezon, Shaper of Sand Heaven // Earth Hour of Promise Jungle Shrine Kirri, Talented Sprout Krosan Verge Magmatic Insight Map the Frontier Marshal's Anthem Mirage Mesa Nantuko Cultivator Nesting Dragon Omnath, Locus of Rage Oracle of Mul Daya Painted Bluffs Path to Exile Perennial Behemoth Perpetual Timepiece Ramunap Excavator Ramunap Ruins Requisition Raid Return of the Wildspeaker Rumbleweed Sand Scout Satyr Wayfinder Scaretiller Scattered Groves Scavenger Grounds Scute Swarm Sevinne's Reclamation Shefet Dunes Sheltered Thicket Skullwinder Sol Ring Springbloom Druid Sun Titan Sunscorched Divide Swiftfoot Boots Terramorphic Expanse The Mending of Dominaria Thrilling Discovery Titania, Protector of Argoth Turntimber Sower Unholy Heat Valorous Stance Vengeful Regrowth Winding Way World Shaper Wreck and Rebuild Yuma, Proud Protector

One sealed pack containing all ten historic Comic Parallel cards the manga-panel artwork versions that individually sell for hundreds to thousands of dollars