Full Necron Dynasties Commander Decklist Creatures (29) Szarekh, the Silent King Imotekh the Stormlord Anrakyr the Traveller Trazyn the Infinite Canoptek Scarab Swarm Canoptek Spyder Canoptek Tomb Sentinel Canoptek Wraith Chronomancer Cryptek Cryptothrall Flayed One Hexmark Destroyer Illuminor Szeras Lokhust Heavy Destroyer Lychguard Necron Deathmark Necron Overlord Plasmancer Psychomancer Royal Warden Sautekh Immortal Shard of the Nightbringer Shard of the Void Dragon Skorpekh Destroyer Skorpekh Lord Technomancer Tomb Blade Triarch Praetorian Arcane Signet Caged Sun Commanders Sphere Convergence of Dominion Cranial Plating Endless Atlas Ghost Ark Gilded Lotus Hedron Archive Mask of Memory Mind Stone Mystic Forge Necron Monolith Night Scythe Resurrection Orb Sceptre of Eternal Glory Sculpting Steel Sol Ring Thought Vessel Unstable Obelisk Wayfarers Bauble Instants (3) Darkness Defile Go for the Throat Beacon of Unrest Dread Return Living Death Mutilate Their Name Is Death Their Number Is Legion Biotransference Out of the Tombs The War in Heaven Barren Moor Desert of the Glorified Myriad Landscape Polluted Mire Reliquary Tower Tomb Fortress Vault of Whispers 30 Swamps With an impressive mix of creatures, artifacts, and spells, this Necron decklist is ready to dominate any Commander table

Whenever it attacks, you'll exile the top card of each player's library, and you can play any number of the cards for free
But the snazzier stuff is like so: U/W Control | Pioneer | Benni_R, Top 8 MTGO Super Qualifier Companion (1) 1 Kaheera, the Orphanguard Planeswalkers (6) 2 Teferi, Hero of Dominaria 4 The Wandering Emperor Instants (19) 1 Dig Through Time 1 Quick Study 2 Change the Equation 2 Get Lost 2 Hallowed Moonlight 2 Memory Deluge 3 Dovin's Veto 3 Make Disappear 3 March of Otherworldly Light Sorceries (3) 1 Farewell 2 Supreme Verdict Enchantments (5) 2 Shark Typhoon 3 Temporary Lockdown Kaheera can play the usual Companion role in Game 1
Enlightened Tutor may get you an enchantment or artifact for a single mana, but you lose a card (the tutor), and you still need to cast said enchantment or artifact
This makes it a good cEDH option, though casual tables might not be happy with it
So every single Arena player has at least one copy of each of these cards