It was the ineffectiveness of the midgame Edict that was holding them back but being able to cleanly clear out the chaffy small dorks helps the Edict cards remain viable cube tools
plus, the opportunity cost is low enough that you can afford to play some random silver-bullet lands like Bojuka Bog in the main deck, because the cost (entering the battlefield tapped) is so low compared to drawing a Meltdown

Decklist: Mabel, Heir to Cragflame Mice in Commander Whiskervale Forerunner | Illustration by Ryan Pancoast Commander (1) Creature (22) Brave-Kin Duo Cheeky House-Mouse Flowerfoot Swordmaster Heartfire Hero Armory Mice Sram, Senior Edificer Puresteel Paladin Emberheart Challenger Manifold Mouse Raging Battle Mouse Whiskerquill Scribe Mouse Trapper Steelburr Champion Thistledown Players Roughshod Duo Taurean Mauler Valley Flamecaller Seedglaive Mentor Whiskervale Forerunner Veteran Guardmouse Brambleguard Captain Bruenor Battlehammer Sorcery (5) Steelshaper's Gift Open the Armory The Battle of Bywater Seize the Day Single Combat Instant (9) Boon of Safety Enlightened Tutor Galadriel's Dismissal Path to Exile Swords to Plowshares Valorous Stance Boros Charm Courageous Resolve Flawless Maneuver Enchantment (8) Land Tax Sigarda's Aid Blacksmith's Talent All That Glitters Fighter Class Forge Anew Shared Animosity Mantle of the Ancients Artifact (21) Colossus Hammer Shadowspear Sol Ring Blackblade Reforged Boros Signet Lightning Greaves Mask of Memory Ring of Valkas Swiftfoot Boots Sword of the Animist Sword of the Squeak Thran Power Suit Loxodon Warhammer Mithril Coat Sunforger Sword of Fire and Ice Sword of Hearth and Home Sword of Sinew and Steel Plate Armor Hammer of Nazahn Argentum Armor Land (34) Great Furnace Rustvale Bridge Arid Mesa Axgard Armory Buried Ruin Cavern of Souls Clifftop Retreat Command Tower Evolving Wilds Fabled Passage Flamekin Village Furycalm Snarl Lupinflower Village Mountain x5 Myriad Landscape Needleverge Pathway Path of Ancestry Plains x7 Rockface Village Rogue's Passage Rugged Prairie Sacred Foundry Sunhome, Fortress of the Legion Temple of Triumph This deck is obviously built around its mouse commander, Mabel, Heir to Cragflame

Aces design
One running theme, however, is that each of the Fantastic Four cards has a supplementary ability that can be activated for one white, one blue, one red, and one green mana, but each ability is typical of the base color of the card