This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: You cannot play more than 4 of: Bonecrusher Giant // Stomp, Mystical Dispute, Lovestruck Beast // Heart's Desire, Heartless Act, Edgewall Innkeeper, Ox of Agonas, The Akroan War, Redcap Melee, Omen of the Sea, Negate, Goldspan Dragon, Embercleave, Eliminate, Binding the Old Gods, Elder Gargaroth, Duress, Brazen Borrower // Petty Theft, Wolfwillow Haven, Scorching Dragonfire, Roiling Vortex, Robber of the Rich, Kazandu Mammoth // Kazandu Valley, Frost Bite, Fervent Champion, Disdainful Stroke, Anax, Hardened in the Forge, Alrund's Epiphany, Shadows' Verdict, Saw It Coming, Rimrock Knight // Boulder Rush, Phoenix of Ash, Glass Casket, Fireblade Charger, Extinction Event, Emergent Ultimatum, Cultivate. · Not legal in this format: Bonecrusher Giant // Stomp, Mystical Dispute, Lovestruck Beast // Heart's Desire, Heartless Act, Edgewall Innkeeper, Ox of Agonas, The Akroan War, Redcap Melee, Omen of the Sea, Goldspan Dragon, Embercleave, Eliminate, Binding the Old Gods, Elder Gargaroth, Brazen Borrower // Petty Theft, Wolfwillow Haven, Scorching Dragonfire, Roiling Vortex, Robber of the Rich, Kazandu Mammoth // Kazandu Valley, Frost Bite, Fervent Champion, Anax, Hardened in the Forge, Alrund's Epiphany, Shadows' Verdict, Saw It Coming, Rimrock Knight // Boulder Rush, Phoenix of Ash, Fireblade Charger, Extinction Event, Emergent Ultimatum, Cultivate, Torbran, Thane of Red Fell, Soul Sear, Shatterskull Smashing // Shatterskull, the Hammer Pass, Shark Typhoon, Klothys, God of Destiny, Giant Killer // Chop Down, Elspeth's Nightmare, Thieves' Guild Enforcer, The Great Henge, Soaring Thought-Thief, Skyclave Shade, Skyclave Apparition, Selfless Savior, Ruin Crab, Reidane, God of the Worthy // Valkmira, Protector's Shield, Polukranos, Unchained, Merfolk Windrobber, Mazemind Tome, Koma, Cosmos Serpent, Jwari Disruption // Jwari Ruins, Into the Story, Fire Prophecy, Drown in the Loch, Drannith Magistrate, Cling to Dust, Behold the Multiverse, Yorion, Sky Nomad, Woe Strider, Valki, God of Lies // Tibalt, Cosmic Impostor, Valiant Rescuer, Test of Talents, Shredded Sails, Showdown of the Skalds, Seasoned Hallowblade, Sea Gate Restoration // Sea Gate, Reborn, Questing Beast, Of One Mind, Lurrus of the Dream-Den, Luminarch Aspirant, Llanowar Visionary, Kroxa, Titan of Death's Hunger, Jaspera Sentinel, Irencrag Pyromancer, Flourishing Fox, Esika's Chariot, Elite Spellbinder, Drannith Stinger, Crippling Fear, Bloodchief's Thirst, Alseid of Life's Bounty, Agadeem's Awakening // Agadeem, the Undercrypt, Vorinclex, Monstrous Raider, Usher of the Fallen, Toski, Bearer of Secrets, Shadowspear, Scavenging Ooze, Pelakka Predation // Pelakka Caverns, Obosh, the Preypiercer, Kiora Bests the Sea God, Kaervek, the Spiteful, Didn't Say Please, Crush the Weak.