Metalworker Metalworker is, without a doubt, the most expensive construct on this list
Hell, they even like to revive the confirmed dead (Im looking at you, Phyrexian Jace)
Like most Magic: The Gathering cards, the value of Unnatural Growth depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Innistrad: Midnight Hunt Promos)

Hour of Reckoning Launch the Fleet Martial Coup Enchantment (4) Birth of the Imperium Defenders of Humanity Reconnaissance Mission The Flesh Is Weak Artifact (14) Arcane Signet Commander's Sphere Everflowing Chalice Inquisitorial Rosette Knight Paladin Mind Stone Reaver Titan Skullclamp Sol Ring Talisman of Dominance Talisman of Hierarchy Talisman of Progress The Golden Throne Thunderhawk Gunship Land (37) Arcane Sanctum Ash Barrens Choked Estuary Command Tower Darkwater Catacombs Dismal Backwater Evolving Wilds Exotic Orchard Memorial to Glory Path of Ancestry Port Town Prairie Stream Scoured Barrens Skycloud Expanse Sunken Hollow Terramorphic Expanse Tranquil Cove Plains x8 Island x5 Swamp x7 Commanders, Theme, and Strategy Your commanders for Forces of the Imperium are Inquisitor Greyfax and Marneus Calgar
The card is a mainstay of the Modern format and has recently been unbanned
Now, lets take a dive into the Rares in the deck: Murderous Rider This is one of the best removal spells in the format, with the added bonus of being a creature as well