This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: Unknown card name: Morkut Necropod. · Not legal in this format: Abzan Skycaptain, Aegis Angel, Affa Protector, Angel of Renewal, Apothecary Geist, Archangel Avacyn // Avacyn, the Purifier, Aven Skirmisher, Blessed Spirits, Bygone Bishop, Charging Griffin, Daghatar the Adamant, Dragon Bell Monk, Eagle of the Watch, Emissary of the Sleepless, Expedition Raptor, Felidar Sovereign, Ghostly Sentinel, Gideon's Phalanx, Kitesail Scout, Kytheon, Hero of Akros // Gideon, Battle-Forged, Linvala, the Preserver, Makindi Aeronaut, Makindi Patrol, Nearheath Chaplain, Odric, Lunarch Marshal, Reaper of Flight Moonsilver, Sentinel of the Eternal Watch, Serra Angel, Shadow Glider, Sigil of the Empty Throne, Spectral Shepherd, Stalwart Aven, Steppe Glider, Topan Freeblade, Topplegeist, Vryn Wingmare, Archfiend of Depravity, Defiant Bloodlord, Farbog Revenant, Fetid Imp, Geyserfield Stalker, Gilt-Leaf Winnower, Gnarlroot Trapper, Graveblade Marauder, Gurmag Swiftwing, Guul Draz Overseer, Hound of the Farbogs, Indulgent Aristocrat, Inverter of Truth, Kalitas, Traitor of Ghet, Kothophed, Soul Hoarder, Liliana, Heretical Healer // Liliana, Defiant Necromancer, Malakir Familiar, Markov Dreadknight, Mindwrack Demon, Noxious Dragon, Olivia's Bloodsworn, Rabid Bloodsucker, Rancid Rats, Relentless Dead, Revenant, Sengir Vampire, Sky Scourer, Smothering Abomination, Typhoid Rats, Vampire Envoy, Akoum Hellkite, Avaricious Dragon, Bloodfire Enforcers, Boggart Brute, Cinder Hellion, Embermaw Hellion, Embodiment of Fury, Flamewake Phoenix, Goblin Dark-Dwellers, Goblin Freerunner, Goblin Glory Chaser, Insolent Neonate, Lightning Shrieker, Makindi Sliderunner, Pyre Hound, Scourge Wolf, Shatterskull Recruit, Shivan Dragon, Shockmaw Dragon, Stormwing Dragon, Thopter Engineer, Tyrant of Valakut, Ulrich's Kindred, Vestige of Emrakul, Vile Aggregate, Abzan Kin-Guard, Baloth Pup, Deathcap Cultivator, Deathmist Raptor, Destructor Dragon, Embodiment of Insight, Honored Hierarch, Intrepid Provisioner, Managorger Hydra, Oran-Rief Hydra, Pharika's Disciple, Plated Crusher, Rhox Maulers, Silverfur Partisan, Skysnare Spider, Soul Swallower, Sylvan Advocate, Sylvan Messenger, Tajuru Pathwarden, Terra Stomper, Warden of the First Tree, Woodland Wanderer, Angelic Captain, Arlinn Kord // Arlinn, Embraced by the Moon, Atarka, World Render, Ayli, Eternal Pilgrim, Citadel Castellan, Cliffhaven Vampire, Drana's Emissary, Dromoka, the Eternal, Fathom Feeder, Grove Rumbler, Iroas's Champion, Kolaghan, the Storm's Fury, Olivia, Mobilized for War, Sigarda, Heron's Grace, Silumgar, the Drifting Death, Skyrider Elf, Stormchaser Mage, Swift Warkite, The Gitrog Monster, Thunderclap Wyvern, Ulamog's Nullifier, Kytheon, Hero of Akros // Gideon, Battle-Forged, Westvale Abbey // Ormendahl, Profane Prince.