City in a Bottle (NM) is the perfect answer
That's tied to how much people like these characters and want to run them as their commander or how fun, unique, and powerful they are as cards
Advanced Search Sets Random Syntax Release date: 2014-07-01 Ajani Steadfast Ajani's Pridemate Avacyn, Guardian Angel Battle Mastery Boonweaver Giant Congregate Constricting Sliver Dauntless River Marshal Devouring Light Divine Favor Ephemeral Shields First Response Geist of the Moors Heliod's Pilgrim Hushwing Gryff Kinsbaile Skirmisher Marked by Honor Mass Calcify Meditation Puzzle Midnight Guard Oppressive Rays Oreskos Swiftclaw Paragon of New Dawns Pillar of Light Preeminent Captain Raise the Alarm Razorfoot Griffin Resolute Archangel Return to the Ranks Sanctified Charge Selfless Cathar Seraph of the Masses Solemn Offering Soul of Theros Soulmender Spectra Ward Spirit Bonds Sungrace Pegasus Tireless Missionaries Triplicate Spirits Wall of Essence Warden of the Beyond Aeronaut Tinkerer therspouts Amphin Pathmage Chasm Skulker Chief Engineer Chronostutter Coral Barrier Diffusion Sliver Dissipate Divination Encrust Ensoul Artifact Frost Lynx Fugitive Wizard Glacial Crasher Hydrosurge Illusory Angel Into the Void Invisibility Jace, the Living Guildpact Jace's Ingenuity Jalira, Master Polymorphist Jorubai Murk Lurker Kapsho Kitefins Master of Predicaments Mercurial Pretender Military Intelligence Mind Sculpt Negate Nimbus of the Isles
It wont go quite as nuclear, but it does keep your vehicle running without being so reliant on gas
With competitive TCG, it's not just about becoming a champion of the Galgar region - it's about being a champion of the world
One card that comes to mind for fixing your library is Insatiable Avarice
