Professional grading guarantees authenticity and condition, with the latter being especially important since its extremely hard to find top Sun and Moon cards in perfect condition
(Of which, I think the City Styles felt the best to me in the past year
A strong case can be made that fetchlands are the most powerful cards in Modern, especially if we set aside a few possible exceptions like Mox Opal or maybe Lightning Bolt
Scientists Abandon Attachments Action News Crew Adventurer's Airship Agna Qel'a Agonasaur Rex Airship Crash Alpharael, Dreaming Acolyte Altanak, the Thrice-Called Ancestral Reminiscence April, Reporter of the Weird Artist's Talent Ashling, Rekindled Avishkar Raceway Awaken the Honored Dead Bandit's Talent Baron Strucker, HYDRA Overlord Basri, Tomorrow's Champion Bellowing Crier Boosted Sloop Borrowed Knowledge Boundary Lands Ranger Brass's Tunnel-Grinder Broadside Barrage Byway Barterer Calamitous Tide Canyon Crab Capital City Captain Howler, Sea Scourge Carlo, Suave Schemer Case of the Crimson Pulse Casey Jones, Vigilante Chandra, Spark Hunter Charging Strifeknight Charming Scoundrel Chart a Course Chitin Gravestalker Cid, Timeless Artificer Clamorous Ironclad Clive, Ifrit's Dominant Collector's Vault Colossus of the Blood Age Cool but Rude Data Scrubber Demand Answers Detention Chariot Discerning Peddler Doc Ock's Henchmen Does Machines Dreadwing Scavenger Duelist of the Mind Emet-Selch, Unsundered Fear of Missing Out Fearless Swashbuckler Flamecache Gecko Flaring Cinder Focus the Mind Fuel the Flames Fugitive Codebreaker Furtive Courier Gallant Strike Galvanic Giant Geyser Leaper Giott, King of the Dwarves Glacial Dragonhunt Goben, Gene-Splice Savant Grab the Prize Gran-Gran Greasewrench Goblin Greed's Gambit Green Goblin, Revenant Gristle Glutton
The likes of Shadowborn Apostle and the recent Elesh Norn, Grand Cenobite promo spring to mind
