This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: You cannot play more than 4 of: Absorb, Aether Gust, Agonizing Remorse, Anax, Hardened in the Forge, Bonecrusher Giant // Stomp, Brazen Borrower // Petty Theft, Cauldron Familiar, Devout Decree, Dream Trawler, Elspeth Conquers Death, Embercleave, Fervent Champion, Growth Spiral, Hydroid Krasis, Lava Coil, Light Up the Stage, Lovestruck Beast // Heart's Desire, Mayhem Devil, Mystical Dispute, Narset, Parter of Veils, Omen of the Sea, Redcap Melee, Rimrock Knight // Boulder Rush, Robber of the Rich, Runaway Steam-Kin, Scorch Spitter, Shatter the Sky, Teferi, Time Raveler, The Birth of Meletis, Torbran, Thane of Red Fell, Unchained Berserker, Uro, Titan of Nature's Wrath, Witch's Oven. · Not legal in this format: Absorb, Aether Gust, Agonizing Remorse, Anax, Hardened in the Forge, Arboreal Grazer, Archon of Sun's Grace, Banishing Light, Beanstalk Giant // Fertile Footsteps, Blacklance Paragon, Bonecrusher Giant // Stomp, Brazen Borrower // Petty Theft, Casualties of War, Cauldron Familiar, Cavalcade of Calamity, Cavalier of Flame, Cavalier of Gales, Cavalier of Thorns, Cerulean Drake, Chandra's Pyrohelix, Chandra, Acolyte of Flame, Claim the Firstborn, Commence the Endgame, Deafening Clarion, Devout Decree, Dovin's Veto, Dream Trawler, Drill Bit, Edgewall Innkeeper, Elspeth Conquers Death, Embercleave, Epic Downfall, Escape to the Wilds, Expansion // Explosion, Experimental Frenzy, Fae of Wishes // Granted, Fervent Champion, Fires of Invention, Frilled Mystic, Gadwick, the Wizened, Gilded Goose, Grim Initiate, Growth Spiral, Gutterbones, Hydroid Krasis, Kenrith, the Returned King, Korvold, Fae-Cursed King, Kroxa, Titan of Death's Hunger, Lava Coil, Legion Warboss, Light Up the Stage, Liliana, Dreadhorde General, Lovestruck Beast // Heart's Desire, Lucky Clover, Mayhem Devil, Midnight Reaper, Murderous Rider // Swift End, Mystical Dispute, Narset, Parter of Veils, Nightpack Ambusher, Nissa, Who Shakes the World, Noxious Grasp, Omen of the Sea, Opt, Paradise Druid, Priest of Forgotten Gods, Quench, Questing Beast, Rankle, Master of Pranks, Redcap Melee, Rimrock Knight // Boulder Rush, Risen Reef, Robber of the Rich, Rotting Regisaur, Runaway Steam-Kin, Scorch Spitter, Scorching Dragonfire, Shatter the Sky, Shifting Ceratops, Spectral Sailor, Sphinx of Foresight, Storm's Wrath, Teferi, Time Raveler, Thassa's Intervention, The Birth of Meletis, Thirst for Meaning, Thought Erasure, Tibalt, Rakish Instigator, Tin Street Dodger, Torbran, Thane of Red Fell, Trail of Crumbs, Unchained Berserker, Uro, Titan of Nature's Wrath, Wilderness Reclamation, Witch's Oven, Woe Strider.