This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: Not legal in this format: Cryptborn Horror, Archon of the Triumvirate, Jarad's Orders, Sphinx's Revelation, Slaughter Games, Righteous Authority, Corpsejack Menace, Hypersonic Dragon, Collective Blessing, Firemind's Foresight, Jarad, Golgari Lich Lord, Evil Twin, Nivmagus Elemental, Grimoire of the Dead, Conjurer's Closet, Captain of the Mists, Lunar Mystic, Lone Revenant, Infinite Reflection, Stolen Goods, Devastation Tide, Spirit Away, Mindshrieker, Undead Alchemist, Ludevic's Test Subject // Ludevic's Abomination, Demonlord of Ashmouth, Gloom Surgeon, Dark Impostor, Killing Wave, Desecration Demon, Pack Rat, Necropolis Regent, Bloodline Keeper // Lord of Lineage, Endless Ranks of the Dead, Curse of Death's Hold, Army of the Damned, Underworld Connections, Epic Experiment, Witchbane Orb, Gilded Lotus, Runechanter's Pike, Chandra, the Firebrand, Laboratory Maniac, Counterflux, Blasphemous Act, Bonfire of the Damned, Burn at the Stake, Past in Flames, Charmbreaker Devils, Tamiyo, the Moon Sage, Jace, Architect of Thought, Dreadbore, Stuffy Doll, Wayfaring Temple, Ogre Slumlord, Redirect, Cyclonic Rift, Nightveil Specter, Diluvian Primordial, Sylvan Primordial, Obzedat, Ghost Council, Loxodon Smiter, Illusionist's Bracers, Vorel of the Hull Clade, Grove of the Guardian, Deathrite Shaman, Rakdos's Return, Supreme Verdict, Nicol Bolas, Planeswalker, Rakdos, Lord of Riots, Gavony Township, Moorland Haunt, Desolate Lighthouse, Gisela, Blade of Goldnight, Gutter Grime, Worldspine Wurm, Death's Presence, Primordial Hydra, Predatory Rampage, Essence of the Wild, Splinterfright, Moldgraf Monstrosity, Soul of the Harvest, Druids' Repository, Revenge of the Hunted, Daybreak Ranger // Nightfall Predator, Wolfir Silverheart, Champion of Lambholt, Vorapede, Predator Ooze, Archwing Dragon, Hound of Griselbrand, Tyrant of Discord, Falkenrath Marauders, Heretic's Punishment, Guild Feud, Chaos Imps, Firewing Phoenix, Ash Zealot, Reforge the Soul, Vexing Devil, Zealous Conscripts.