Just look at how beautiful the card art is, and how adorable Furret looks
Flood the board with creatures, then use your commander to get deep discounts on your spells setting up explosive turns your opponents wont see coming

The Mean Lord Xander | Commander | Mark Wischkaemper Commander (1) 1 Lord Xander, the Collector Creatures (10) 1 Deadeye Navigator 1 Dimir House Guard 1 Drift of Phantasms 1 Ethereal Usher 1 Hellkite Charger 1 Moraug, Fury of Akoum 1 Netherborn Phalanx 1 Port Razer 1 Rune-Scarred Demon 1 Sidisi, Undead Vizier Planeswalkers (2) 1 Liliana Vess 1 Zariel, Archduke of Avernus Instants (10) 1 Abnormal Endurance 1 Demonic Gifts 1 Feign Death 1 Malakir Rebirth 1 Muddle the Mixture 1 Perplex 1 Return to Action 1 Shred Memory 1 Supernatural Stamina 1 Undying Malice Sorceries (16) 1 Brainspoil 1 Coveted Prize 1 Crux of Fate 1 Damnation 1 Dark Petition 1 Deadly Tempest 1 Decree of Pain 1 Demonic Collusion 1 Demonic Tutor 1 Diabolic Tutor 1 Dimir Machinations 1 Increasing Ambition 1 Life's Finale 1 Mastermind's Acquisition 1 Profane Tutor 1 Razaketh's Rite Enchantments (4) 1 Aggravated Assault 1 Attrition 1 Kaya's Ghostform 1 Vampiric Rites Artifacts (18) 1 Arcane Signet 1 Chromatic Lantern 1 Commander's Sphere 1 Dimir Signet 1 Ebony Fly 1 Expedition Map 1 Fellwar Stone 1 Honored Heirloom 1 Izzet Signet 1 Letter of Acceptance 1 Mind Stone 1 Network Terminal 1 Rakdos Signet 1 Skyclave Relic 1 Sol Ring 1 Sword of Feast and Famine 1 Thought Vessel 1 Whispersilk Cloak Lands (39) 1 Island 1 Mountain 8 Swamp 1 Bad River 1 Blighted Cataract 1 Blood Crypt 1 Bloodstained Mire 1 Bojuka Bog 1 Cascade Bluffs 1 Castle Locthwain 1 Castle Vantress 1 Choked Estuary 1 Crumbling Necropolis 1 Duskmantle, House of Shadow 1 Foreboding Ruins 1 Graven Cairns 1 High Market 1 Luxury Suite 1 Morphic Pool 1 Nephalia Drownyard 1 Polluted Delta 1 Reliquary Tower 1 Rocky Tar Pit 1 Rogue's Passage 1 Scalding Tarn 1 Scavenger Grounds 1 Smoldering Marsh 1 Steam Vents 1 Sunken Hollow 1 Sunken Ruins 1 Tolaria West 1 Watery Grave I think we can safely divide this deck into a few primary categories

David Xanatos, Steel Clan Leader can also be played early in the game to deal indirect damages to a Character while The Headless Horseman can protect your other cards if played as a bodyguard
Her +1 is not that useful in T4, but her -2