Atraxa Gyruda Counters

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Pretty straightforward proliferate deck.
 
Mana Acceleration (14): General (1): Spells (10): Sideboard (Omitted/Cut card ideas):
1 Astral Cornucopia 1 Atraxa, Praetors' Voice 1 Contagion Clasp 1 Cradle of Vitality
1 Cryptic Trilobite   1 Contagion Engine 1 Orochi Hatchery
1 Crystalline Crawler Companion (1): 1 Grimoire of the Dead 1 Aetherworks Marvel
1 Empowered Autogenerator 1 Gyruda, Doom of Depths 1 Helm of the Host  
1 Everflowing Chalice   1 Lux Cannon  
1 Gemstone Array Creatures (39): 1 Oracle's Vault  
1 Pentad Prism 1 Clay Golem 1 Tome of Legends  
1 Workhorse 1 Etched Oracle 1 Mind Unbound  
1 Hamza, Guardian of Arashin 1 Tetravus 1 Death's Presence  
1 Rasputin Dreamweaver 1 Triskelion 1 Felidar Retreat  
1 Iceberg 1 Walking Ballista    
1 Devoted Druid 1 Conclave Mentor    
1 Gyre Sage 1 Corpsejack Menace    
1 Incubation Druid 1 Enduring Scalelord    
  1 Experiment Kraj    
Lands (36): 1 Ezuri, Claw of Progress    
1 Calciform Pools 1 Fathom Mage    
1 Dreadship Reef 1 Felisa, Fang of Silverquill    
1 Saltcrusted Steppe 1 Karlov of the Ghost Council    
1 Fountain of Cho 1 Master Biomancer    
1 Rushwood Grove 1 Merfolk Skydiver    
1 Saprazzan Cove 1 Winding Constrictor    
1 Subterranean Hangar 1 Zameck Guildmage    
1 Bottomless Vault 1 Marionette Master    
1 Hollow Trees 1 Necropolis Regent    
1 Icatian Store 1 Yawgmoth, Thran Physician    
1 Sand Silos 1 Herald of Secret Streams    
1 City of Shadows 1 Myojin of Seeing Winds    
1 Mage-Ring Network 1 Novijen Sages    
1 Vivid Creek 1 Sage of Hours    
1 Vivid Grove 1 Sakashima of a Thousand Faces    
1 Vivid Marsh 1 Sakashima the Impostor    
1 Vivid Meadow 1 Spark Double    
1 Hickory Woodlot 1 Thrummingbird    
1 Peat Bog 1 Viral Drake    
1 Remote Farm 1 Bloodspore Thrinax    
1 Saprazzan Skerry 1 Forgotten Ancient    
1 Arcane Sanctum 1 Slurrk, All-Ingesting    
1 Seaside Citadel 1 Spike Weaver    
1 Opulent Palace 1 Steelbane Hydra    
1 Zagoth Triome 1 Vorinclex, Monstrous Raider    
1 Indatha Triome 1 Abzan Battle Priest    
1 Command Tower 1 Grateful Apparition    
1 Forge of Heroes 1 Lathiel, the Bounteous Dawn    
1 Gavony Township 1 Shalai, Voice of Plenty    
1 Guildmages' Forum      
1 Inkmoth Nexus      
1 Karn's Bastion      
1 Littjara Mirrorlake      
1 Opal Palace      
1 Path of Ancestry      
1 Port of Karfell