Not only can it exile any permanent right when it enters the battlefield, but its +4 ability also ensures it can do so every other turn without dying
Commander: Satoru Umezawa
Even the most skilled of modern mages only partially understand the Conch Horns awesome powers

Akoum Stonewaker Artistic Process Ashling's Command Ashling, the Limitless Brave the Wilds Budoka Gardener Budoka Gardener Call the Skybreaker Campus Composer Dance of the Tumbleweeds Din of the Fireherd Elemental Appeal Elemental Eruption Elemental Expressionist Elemental Masterpiece Elemental Summoning Eris, Roar of the Storm Eyes of the Wisent Grove of the Guardian Hoofprints of the Stag Hostility Hylda of the Icy Crown Kindle the Inner Flame Lagomos, Hand of Hatred Magma Opus Marath, Will of the Wild Mascot Exhibition Mask of Immolation Mass of Mysteries Molten Lavamancer Mu Yanling, Sky Dancer Multiple Choice Muse's Encouragement Nissa, Sage Animist Omnath, Locus of Rage Preening Champion Prismari Pianist Purphoros's Intervention Rakka Mar Rebellion of the Flamekin Rekindling Phoenix Resculpt Research // Development Research // Development Rite of the Raging Storm Rootha, Mastering the Moment Satyr Nyx-Smith Seasoned Pyromancer Seed Guardian Seize the Storm Sparkspitter Tchotchke Elemental The Wandering Minstrel Titania, Nature's Force Titania, Protector of Argoth Tumbleweed Rising Valduk, Keeper of the Flame Vernal Sovereign Voice of Resurgence Voice of the Woods Walker of the Grove Wand of the Elements Wildfire Awakener Will, Scholar of Frost Wolfbriar Elemental Young Pyromancer Zaffai, Thunder Conductor Zektar Shrine Expedition Zendikar's Roil

Thats why my top synergy card in this category is actually Great Train Heist