Lets add a few more details to the example and we can see where it might be better to go for the deal instead
This lets you fix your mana, largely due to our next entry

Kozilek, the Great Distortion Kozilek, the Great Distortion | Illustration by Aleksi Briclot Commander (1) Planeswalker (5) Karn Liberated Karn, Scion of Urza Karn, the Great Creator Ugin, the Ineffable Ugin, the Spirit Dragon Creature (27) Artisan of Kozilek Bane of Bala Ged Blightsteel Colossus Burnished Hart Conduit of Ruin Duplicant Emrakul, the Promised End Endbringer Fleshraker Foundry Inspector Geode Golem It That Betrays It That Heralds the End Kozilek, Butcher of Truth Meteor Golem Oblivion Sower Palladium Myr Platinum Angel Solemn Simulacrum Soul of New Phyrexia Steel Hellkite Thought-Knot Seer Ulamog, the Ceaseless Hunger Ulamog, the Infinite Gyre Void Winnower Wandering Archaic Wurmcoil Engine Instant (3) Eldrazi Confluence Kozilek's Command Titan's Presence Sorcery (1) Enchantment (1) Artifact (30) Basalt Monolith Commander's Plate Darksteel Forge Dreamstone Hedron Everflowing Chalice Expedition Map Forsaken Monument Gilded Lotus Grafdigger's Cage Hedron Archive Lightning Greaves Manifold Key Mind Stone Mirage Mirror Moonsilver Key Mycosynth Lattice Mystic Forge Nevinyrral's Disk Planar Bridge Quicksilver Amulet Rings of Brighthearth Sensei's Divining Top Shadowspear Sol Ring Sol Talisman Staff of Domination Thought Vessel Thran Dynamo Unstable Obelisk Worn Powerstone Land (32) Blast Zone Darksteel Citadel Eldrazi Temple Eye of Ugin Ghost Quarter Homeward Path Reliquary Tower Sanctum of Ugin Scavenger Grounds Shrine of the Forsaken Gods Temple of the False God Ugin's Labyrinth Urza's Cave Urza's Mine Urza's Power Plant Urza's Saga Urza's Tower Strip Mine Wastes x14 Ill admit I was skeptical when I first started putting together my Kozilek, the Great Distortion deck, but I was pleasantly surprised to see how well it held up

Other sapphire cards like How Far Ill Go and Friend Like Me, are also excellent cards to put into a deck with Gramma Tala, Spirit of the Ocean - thanks to their abilities allowing players to put cards into their inkwell and thus gain yet more lore.
Use Professional Grading Services : Cards graded by PSA or BGS have been authenticated and are generally more trustworthy
Artifact synergy is one of the cleanest and most effective ways to run away with a Commander game, and Ravenous Robots is another entry in that tried and true tradition