You can use a bunch of powerful stax pieces like Esper Sentinel, Rhystic Study, and Ghostly Prison to slow the game down until you assemble a combo with all the artifact tutors available in Azorius
Commander| Jason Alt Commander (2) 1 Ludevic, Necro-Alchemist 1 Vial Smasher the Fierce Creatures (18) 1 Archaeomancer 1 Chasm Skulker 1 Fog Bank 1 Guttersnipe 1 Jeleva, Nephalia's Scourge 1 Jori En, Ruin Diver 1 Kaervek the Merciless 1 Melek, Izzet Paragon 1 Niv-Mizzet, the Firemind 1 Mulldrifter 1 Notion Thief 1 Psychosis Crawler 1 Shriekmaw 1 Snapcaster Mage 1 Spitebellows 1 Taurean Mauler 1 Tidespout Tyrant 1 Torrential Gearhulk Planeswalkers (1) 1 Nicol Bolas, Planeswalker Instants (7) 1 Curtains' Call 1 Dig Through Time 1 Evacuation 1 Mindswipe 1 Murderous Cut 1 Rewind 1 Searing Wind Sorceries (11) 1 Black Sun's Zenith 1 Blasphemous Act 1 Call the Skybreaker 1 Cruel Ultimatum 1 Decree of Pain 1 Mizzix's Mastery 1 Spelltwine 1 Subterranean Tremors 1 Temporal Tresspass 1 Treasure Cruise 1 Volcanic Vision Enchantments (8) 1 Curse of Echoes 1 Eye of the Storm 1 Future Sight 1 Gratuitous Violence 1 Meishin, the Mind Cage 1 Mind's Dilation 1 Possibility Storm 1 Thought Reflection Artifacts (15) 1 Chromatic Lantern 1 Coalition Relic 1 Commander's Sphere 1 Crawlspace 1 Darksteel Ingot 1 Dimir Signet 1 Expedition Map 1 Izzet Signet 1 Pyromancer's Goggles 1 Rakdos Signet 1 Sol Ring 1 Sphinx-Bone Wand 1 Thought Vessel 1 Venser's Journal 1 Wayfarer's Bauble Lands (38) 6 Island 6 Mountain 6 Swamp 1 Ash Barrens 1 Bloodstained Mire 1 Command Tower 1 Crumbling Necropolis 1 Desolate Lighthouse 1 Dimir Aqueduct 1 Evolving Wilds 1 Exotic Orchard 1 Grixis Panorama 1 Izzet Boilerworks 1 Polluted Delta 1 Rakdos Carnarium 1 Reliquary Tower 1 River of Tears 1 Scalding Tarn 1 Temple of Deceit 1 Temple of Epiphany 1 Temple of Malice 1 Temple of the False God 1 Terramorphic Expanse Rocky Tar Pit and noise like that
Shopping locally offers the benefit of inspecting cards up close and interacting directly with shop owners and staff, who can provide expert advice
Again, it's not card advantage in and of itself (since you draw three, and then discard three + lose the Coliseum), but it combines famously with Deep Analysis and madness cards (such as Circular Logic), and its effect can't be counterspelled
