This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: Not legal in this format: Thoughtseize, Scavenging Ooze, Spirit of the Labyrinth, Young Pyromancer, Abrupt Decay, Mutavault, Putrefy, Guttersnipe, Aetherling, Swan Song, Rakdos Charm, Blind Obedience, Reaper of the Wilds, Supreme Verdict, Time Ebb, Slaughter Games, Loxodon Smiter, Rakdos Cackler, Aurelia, the Warleader, Boros Reckoner, Legion Loyalist, Lotleth Troll, Firemane Avenger, Rakdos's Return, Brimaz, King of Oreskos, Wojek Halberdiers, Thespian's Stage, Underworld Connections, Dreg Mangler, Mizzium Mortars, Skullcrack, Domri Rade, Erebos, God of the Dead, Purphoros, God of the Forge, Nivmagus Elemental, Prophet of Kruphix, Gild, Varolz, the Scar-Striped, Vanguard of Brimaz, Boros Charm, Fleecemane Lion, Skylasher, Grisly Salvage, Elspeth, Sun's Champion, Legion's Initiative, Deadbridge Goliath, Counterflux, Hypersonic Dragon, Mercurial Chemister, Angelic Skirmisher, Sepulchral Primordial, Five-Alarm Fire, Hellkite Tyrant, Giant Adephage, Gyre Sage, Skarrg Goliath, Clan Defiance, Rubblehulk, Spark Trooper, Immortal Servitude, Rubblebelt Raiders, Glaring Spotlight, Illusionist's Bracers, Trait Doctoring, Blood Scrivener, Pyrewild Shaman, Gaze of Granite, Obzedat's Aid, Progenitor Mimic, Tajic, Blade of the Legion, Vorel of the Hull Clade, Burning-Tree Emissary, Catch // Release, Ready // Willing, Fabled Hero, Hundred-Handed One, Artisan of Forms, Curse of the Swine, Meletis Charlatan, Anger of the Gods, Firedrinker Satyr, Labyrinth Champion, Rageblood Shaman, Arbor Colossus, Boon Satyr, Anax and Cymede, Daxos of Meletis, Medomai the Ageless, Polis Crusher, Steam Augury, Triad of Fates, Ajani's Chosen, Banisher Priest, Bonescythe Sliver, Indestructibility, Path of Bravery, Planar Cleansing, Seraph of the Sword, Colossal Whale, Tidebinder Mage, Rise of the Dark Realms, Sanguine Bond, Syphon Sliver, Mindsparker, Shivan Dragon, Wild Ricochet, Garruk's Horde, Megantic Sliver, Fated Retribution, Hero of Iroas, Fated Infatuation, Eater of Hope, Fated Return, Felhide Spiritbinder, Flame-Wreathed Phoenix, Oracle of Bones, Hero of Leina Tower, Chromanticore, Karametra, God of Harvests.