This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: Not legal in this format: Thromok the Insatiable, Llanowar Elves, Fyndhorn Elves, Arbor Elf, Birds of Paradise, Elvish Mystic, Joraga Treespeaker, Stampede Driver, Wasteland Viper, Bloom Tender, Devoted Druid, Gemhide Sliver, Gyre Sage, Heart Warden, Hermit Druid, Jade Mage, Kazandu Tuskcaller, Leaf Gilder, Lotus Cobra, Manaweft Sliver, Quirion Elves, Sakura-Tribe Elder, Scavenging Ooze, Sylvan Caryatid, Sylvan Ranger, Utopia Tree, Viridian Zealot, Voyaging Satyr, Werebear, Wirewood Elf, Wirewood Hivemaster, Wolf-Skull Shaman, Priest of Titania, Elvish Lyrist, Elvish Scrapper, Greenseeker, Joraga Warcaller, Quirion Ranger, Acidic Slime, Ant Queen, Avenger of Zendikar, Bane of Progress, Baru, Fist of Krosa, Bloodline Shaman, Borderland Ranger, Briarhorn, Brutalizer Exarch, Chameleon Colossus, Civic Wayfinder, Craterhoof Behemoth, Drumhunter, Elder of Laurels, Elvish Archdruid, Elvish Champion, Elvish Vanguard, Elvish Visionary, Eternal Witness, Ezuri, Renegade Leader, Farhaven Elf, Fierce Empath, Frontier Guide, Garruk's Horde, Garruk's Packleader, Giant Adephage, Glissa Sunseeker, Rofellos, Llanowar Emissary, Heartwood Storyteller, Hornet Queen, Immaculate Magistrate, Imperious Perfect, Indrik Stomphowler, Jedit Ojanen of Efrava, Kalonian Behemoth, Kalonian Hydra, Kamahl, Fist of Krosa, Karametra's Acolyte, Kaysa, Khalni Hydra, Kodama of the North Tree, Liege of the Tangle, Lys Alana Huntmaster, Masked Admirers, Mold Shambler, Moldgraf Monstrosity, Mul Daya Channelers, Mycoloth, Ohran Viper, Primordial Hydra, Primordial Sage, Quirion Trailblazer, Rampaging Baloths, Regal Force, Reki, the History of Kamigawa, Silverglade Elemental, Silvos, Rogue Elemental, Skarrg Goliath, Somberwald Sage, Soul of the Harvest, Terastodon, Terra Stomper, Timberwatch Elf, Titania's Chosen, Ondu Giant, Oracle of Mul Daya, Sylvan Primordial, Verdant Force, Vigor, Viridian Corrupter, Viridian Joiner, Viridian Shaman, Vorapede, Vorinclex, Voice of Hunger, Weatherseed Treefolk, Wickerbough Elder, Wildheart Invoker, Wirewood Channeler, Wolfbriar Elemental, Wood Elves, Yeva, Nature's Herald, Woodfall Primus, Yavimaya Dryad, Polukranos, World Eater, Primalcrux, Zoologist, Argothian Wurm, Ghost-Lit Raider, Cunning Sparkmage, Brimstone Mage, Fire Imp, Furystoke Giant, Orcish Settlers, Prodigal Pyromancer, Ravaging Horde, Shivan Wumpus, Soulbright Flamekin, Stalking Yeti, Tin Street Hooligan, Viashino Fangtail, Vithian Stinger, Charmbreaker Devils, Fireslinger, Flameblast Dragon, Flametongue Kavu, Inferno Titan, Invader Parasite, Kumano, Master Yamabushi, Lord of Shatterskull Pass, Ogre Arsonist, Radha, Heir to Keld, Zhur-Taa Druid, Shivan Wurm, Skarrg Guildmage, Spellbreaker Behemoth, Stonebrow, Krosan Hero, Vithian Renegades, Bloodbraid Elf, Ghor-Clan Rampager, Ruric Thar, the Unbowed, Xenagos, God of Revels, Domri Rade, Sarkhan Vol, Xenagos, the Reveler, Chandra, Pyromaster, Garruk, Primal Hunter, Colossal Might, Traitorous Blood, Tempt with Vengeance, Reckless Charge, Crimson Wisps, Burning Wish, Wildsize, Wild Hunger, Vines of Vastwood, Unnatural Predation, Triumph of the Hordes, Tower Above, Tooth and Nail, Sylvan Might, Strength in Numbers, Stampede, Soul's Majesty, Sheltering Word, Riding the Dilu Horse, Revenge of the Hunted, Ranger's Guile, Predator's Strike, Overwhelming Stampede, Overrun, Natural Order, Mutagenic Growth, Leeching Bite, Invigorate, Increasing Savagery, Hunter's Prowess, Harmonize, Genesis Wave, Gelatinous Genesis, Chorus of Might, Avoid Fate, Sprouting Vines, Spoils of Victory, Three Visits, Skyshroud Claim, Seek the Horizon, Search for Tomorrow, Recross the Paths, Realms Uncharted, Ranger's Path, Rampant Growth, Into the North, Peregrination, Nature's Lore, Land Grant, Kodama's Reach, Journey of Discovery, Growth Spasm, Glimpse of Nature, Farseek, Far Wanderings, Explosive Vegetation, Enlarge, Cultivate, Wreak Havoc, Frenzied Tilling, Tectonic Rift, Sunder from Within, Seismic Spike, Rain of Salt, Pillage, Molten Rain, Melt Terrain, Lava Flow, Into the Maw of Hell, Implode, Icefall, Fissure, Earth Rift, Demolish, Stone Rain, Aftershock, Winter's Grasp, Uproot, Thermokarst, Reap and Sow, Plow Under, Rain of Thorns, Mwonvuli Acid-Moss, Ice Storm, Desert Twister, Creeping Mold, Bramblecrush, Hull Breach, Destructive Revelry, Wear Away, Unravel the Aether, Tribute to the Wild, Slice in Twain, Relic Crush, Nature's Claim, Naturalize, Mystic Melting, Gleeful Sabotage, Deglamer, Simoon, Clan Defiance, Thunderous Wrath, Spawning Breath, Lightning Bolt, Lava Burst, Kaervek's Torch, Hammer of Bogardan, Flames of the Firebrand, Fireball, Disintegrate, Demonfire, Comet Storm, Bonfire of the Damned, Blaze, Banefire.