This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: You cannot play more than 4 of: Aether Gust, Arboreal Grazer, Bonecrusher Giant // Stomp, Devout Decree, Duress, Gilded Goose, Glass Casket, Gutterbones, Hydroid Krasis, Knight of the Ebon Legion, Leafkin Druid, Legion's End, Lovestruck Beast // Heart's Desire, Murderous Rider // Swift End, Mystical Dispute, Negate, Nissa, Who Shakes the World, Noxious Grasp, Oko, Thief of Crowns, Once Upon a Time, Paradise Druid, Questing Beast, Rankle, Master of Pranks, Rotting Regisaur, Shifting Ceratops, Spawn of Mayhem, Teferi, Time Raveler, Veil of Summer, Wicked Wolf. · Not legal in this format: Aether Gust, Agent of Treachery, Arboreal Grazer, Ashiok, Dream Render, Ayara, First of Locthwain, Barkhide Troll, Beanstalk Giant // Fertile Footsteps, Blacklance Paragon, Bonecrusher Giant // Stomp, Brazen Borrower // Petty Theft, Brineborn Cutthroat, Chandra, Acolyte of Flame, Circuitous Route, Conclave Tribunal, Dance of the Manse, Deafening Clarion, Devout Decree, Doom Foretold, Dovin's Veto, Dreadhorde Butcher, Edgewall Innkeeper, Experimental Frenzy, Fae of Wishes // Granted, Faerie Guidemother // Gift of the Fae, Feasting Troll King, Find // Finality, Fires of Invention, Flame Sweep, Foulmire Knight // Profane Insight, Frilled Mystic, Garruk, Cursed Huntsman, Giant Killer // Chop Down, Gideon Blackblade, Gilded Goose, Golden Egg, Golos, Tireless Pilgrim, Growth Spiral, Growth-Chamber Guardian, Guild Globe, Gutterbones, Hero of Precinct One, Hydroid Krasis, Kaya's Wrath, Knight of Autumn, Knight of the Ebon Legion, Lava Coil, Leafkin Druid, Legion's End, Light Up the Stage, Lovestruck Beast // Heart's Desire, Lucky Clover, Midnight Reaper, Murderous Rider // Swift End, Mystical Dispute, Narset, Parter of Veils, Nightpack Ambusher, Nissa, Who Shakes the World, Noxious Grasp, Oath of Kaya, Oko, Thief of Crowns, Once Upon a Time, Order of Midnight // Alter Fate, Paradise Druid, Pelt Collector, Priest of Forgotten Gods, Questing Beast, Rankle, Master of Pranks, Realm-Cloaked Giant // Cast Off, Redcap Melee, Risen Reef, Robber of the Rich, Rotting Regisaur, Scorch Spitter, Shifting Ceratops, Sinister Sabotage, Spawn of Mayhem, Spectral Sailor, Teferi, Time Raveler, The Elderspell, The Great Henge, Thought Erasure, Time Wipe, Tolsimir, Friend to Wolves, Unmoored Ego, Veil of Summer, Venerated Loxodon, Vivien, Arkbow Ranger, Voracious Hydra, Vraska, Golgari Queen, Wicked Wolf, Wildborn Preserver, Witch's Oven.