This deck does not appear to be legal in Standard (Season from Sep 2021).
Problems: Not legal in this format: Abundant Growth, Ancient Ziggurat, Animar, Soul of Elements, Armorcraft Judge, Avatar of the Resolute, Bane of Progress, Battlefront Krushok, Beastcaller Savant, Bioshift, Birds of Paradise, Bloodspore Thrinax, Bond Beetle, Bow of Nylea, Bred for the Hunt, Cetavolver, Chasm Skulker, Chromatic Lantern, Colossus of Akros, Command Beacon, Command Tower, Crowned Ceratok, Cryptolith Rite, Crystalline Crawler, Curse of Predation, Cytoplast Manipulator, Cytoplast Root-Kin, Draining Whelk, Durable Handicraft, Fangren Firstborn, Fathom Mage, Fertilid, Forced Adaptation, Forgotten Ancient, Give // Take, Gyre Sage, Hamletback Goliath, Hardened Scales, Harvester Druid, Hunger of the Howlpack, Inspiring Call, Ironshell Beetle, Ivy Lane Denizen, Jin-Gitaxias, Core Augur, Jugan, the Rising Star, Kalonian Hydra, Karametra's Favor, Kujar Seedsculptor, Lifeblood Hydra, Lifecrafter's Bestiary, Lifecrafter's Gift, Llanowar Reborn, Longshot Squad, Lorescale Coatl, Managorger Hydra, Manamorphose, Map the Wastes, Master Biomancer, Mind Spring, Mycoloth, Novijen Sages, Novijen, Heart of Progress, Obsessive Skinner, Opal Palace, Oran-Rief, the Vastwood, Ordeal of Nylea, Ordeal of Thassa, Phantom Nantuko, Plaxcaster Frogling, Predator Ooze, Preyseizer Dragon, Primal Vigor, Prime Speaker Zegana, Primeval Bounty, Primeval Protector, Primeval Titan, Primordial Hydra, Protean Hydra, Rakavolver, Ramos, Dragon Engine, Recurring Insight, Ridgescale Tusker, Rishkar, Peema Renegade, Sage of Hours, Sapphire Drake, Satyr Grovedancer, Savageborn Hydra, Scrounging Bandar, Servant of the Scale, Simic Basilisk, Simic Initiate, Skullmulcher, Solidarity of Heroes, Somberwald Sage, Ugin's Insight, Undergrowth Champion, Vastwood Hydra, Verdurous Gearhulk, Vigor, Wild Cantor, Zameck Guildmage, Zendikar Resurgent, Aether Figment.