The middle two are a nice default and makes this a two for one quite ably, and you can discard lands or the wrong card for better optons as well making this not card value, but card flow
" Alongside landfall cards or cards like The Gitrog Monster, "Sin, Spira's Punishment" will allow you to create a pretty deep mana bank
Add to that the second most potent card draw engine in Underworld Connections (second only to Jace, Architect of Thought into Sphinxs Revelation) and there are some rich incentives to cast black cards

1 Adventuring Gear 1 Agent of the Shadow Thieves 1 Anara, Wolvid Familiar 1 Ancient Craving 1 Barren Moor 1 Blighted Fen 1 Blighted Woodland 1 Blood Fountain 1 Cabaretti Courtyard 1 Canopy Cover 1 Command Tower 1 Crawling Sensation 1 Crop Rotation 1 Cryptic Caves 1 Cultivate 1 Deathsprout 1 Drown in Filth 1 Erinis, Gloom Stalker 1 Evolving Wilds 1 Exsanguinate 1 Falthis, Shadowcat Familiar 1 Far Wanderings 11 Forest 1 Fork in the Road 1 Fungal Rebirth 1 Ghost Quarter 1 Go for the Throat 1 Golgari Charm 1 Grapple with the Past 1 Grim Discovery 1 Grisly Salvage 1 Harmonize 1 Harrow 1 Haunted Cloak 1 Havenwood Battleground 1 Hickory Woodlot 1 Jund Panorama 1 Krosan Grip 1 Murasa Behemoth 1 Myriad Landscape 1 Peat Bog 1 Perilous Forays 1 Plumb the Forbidden 1 Prowler's Helm 1 Putrefy 1 Read the Bones 1 Regrowth 1 Retreat to Hagra 1 Retreat to Kazandu 1 Return to Nature 1 Ring of Kalonia 1 Riveteers Overlook 1 Roadside Reliquary 1 Sakura-Tribe Elder 1 Scaretiller 1 Scion of Halaster 1 Scrib Nibblers 1 Skola Grovedancer 1 Skull Prophet 1 Skyclave Pick-Axe 1 Snakeskin Veil 1 Sol Ring 1 Sporemound 1 Springbloom Druid 1 Stinkweed Imp 1 Sudden Reclamation 7 Swamp 1 Sylvan Scrying 1 Syr Konrad, the Grim 1 Tectonic Edge 1 Terramorphic Expanse 1 The Binding of the Titans 1 Time of Need 1 Timeless Witness 1 Tireless Provisioner 1 Tormod, the Desecrator 1 Tranquil Thicket 1 Undercity Informer 1 Village Rites 1 Vorrac Battlehorns 1 Warped Landscape 1 Winding Way 1 Worm Harvest 1 Zendikar's Roil Room for Improvement We played two games with our Artisan decks, and while the deck is a blast to helm, there are definitely some weaknesses and areas for improvement

Im going to quote Gavin Verhey from the article that I linked up above: Game Changers dramatically warp Commander games, allowing players to run away with resources, shift games in ways that many players dislike, block people from play, efficiently search for their strongest cards, or have commanders that tend to take away from more casual games
Players on Reddit pointed out that the unusual wording on Mox Diamond allows you to circumvent this problem, since you can choose not to discard a land to prevent it from ever entering play and receiving a counter