Closing out common is Forge Devil, which is narrow and only a 1/1, but it can kill a few things that matter

Charix EDH | Commander | Abe Sargent Commander (1) 1 Charix, the Raging Isle Creatures (23) 1 Arcanis the Omnipotent 1 Blighted Agent 1 Broodbirth Viper 1 Clever Impersonator 1 Deadeye Quartermaster 1 Frontline Sage 1 Kraken of the Straits 1 Kira, Great Glass-Spinner 1 Lu Xun, Scholar General 1 Looter il-Kor 1 Mulldrifter 1 Pilgrim's Eye 1 Scourge of Fleets 1 Silver Myr 1 Solemn Simulacrum 1 Sun Quan, Lord of Wu 1 Tempest Djinn 1 Thassa's Emissary 1 Thassa's Oracle 1 Thieving Magpie 1 Thada Adel, Acquisitor 1 Thassa, Deep-Dwelling 1 Thassa, God of the Sea Planeswalkers (4) 1 Jace, Unraveler of Secrets 1 Kasmina, Enigmatic Mentor 1 Mu Yanling 1 Teferi, Master of Time Instants (9) 1 Counterspell 1 Cryptic Command 1 Cyclonic Rift 1 Disallow 1 Fact or Fiction 1 Fierce Guardianship 1 Lazotep Plating 1 Mystic Confluence 1 Whir of Invention Sorceries (3) 1 Fabricate 1 Flow of Ideas 1 Reshape Enchantments (4) 1 Imprisoned in the Moon 1 Monastery Siege 1 Propaganda 1 Rhystic Study Artifacts (23) 1 Armillary Sphere 1 Batterskull 1 Bloodforged Battle-Axe 1 Caged Sun 1 Everflowing Chalice 1 Extraplanar Lens 1 Gilded Lotus 1 Hammer of Nazhan 1 Hedron Archive 1 Lightning Greaves 1 Mind Stone 1 Mind's Eye 1 Sky Diamond 1 Sol Ring 1 Staff of Nin 1 Swiftfoot Boots 1 Sword of Fire and Ice 1 Sword of the Animist 1 Trailblazer's Boots 1 Whispersilk Cloak 1 Bident of Thassa 1 Blackblade Reforged 1 Nyx Lotus And there we have it

Urborg, Tomb of Yawgmoth makes all of your lands into Swamps, and Coffers turns that into a ton of mana
There would be one wildcard currency that players would use to craft any rarity card, but at different rates
Linear decks cause the "Two to Five Lands Strategy" to completely fall apart, both when playing with them and when playing against them
Helm of the Ghastlord, Ophidian Eye, and Curiosity all turn Y'shtola, Night's Blessed into a relentless engine, drawing cards and draining life every time you sling a spell