41 cards where the cards aren’t reprints and the card types include “turtle”

Kappa Cannoneer (Neon Dynasty Commander #14)
Kogla and Yidaro (March of the Machine #244)
Steelbane Hydra (Throne of Eldraine #322)
Colossal Skyturtle (Kamigawa: Neon Dynasty #216)
Blossoming Tortoise (Wilds of Eldraine #163)
Archelos, Lagoon Mystic (Commander Legends #268)
Yidaro, Wandering Monster (Ikoria: Lair of Behemoths #141)
Snapping Voidcraw (Modern Horizons 3 #204)
The Pride of Hull Clade (Murders at Karlov Manor #172)
Bedrock Tortoise (The Lost Caverns of Ixalan #176)
Riptide Turtle (Theros Beyond Death #61)
Kappa Tech-Wrecker (Kamigawa: Neon Dynasty #198)
Fecund Greenshell (Bloomburrow #171)
Quandrix Cultivator (Strixhaven: School of Mages #218)
Gorex, the Tombshell (Midnight Hunt Commander #20)
Dragon Turtle (Adventures in the Forgotten Realms #56)
Thunderous Snapper (Throne of Eldraine #215)
Aegis Turtle (Ikoria: Lair of Behemoths #39)
Sailors' Bane (Commander Legends: Battle for Baldur's Gate #93)
Angler Turtle (M19 Gift Pack #GP2)
Mistford River Turtle (Throne of Eldraine #56)
Thriving Turtle (Kaladesh #66)
Meandering Towershell (Khans of Tarkir #141)
Scuttlegator (Ravnica Allegiance #218)
Tidepool Turtle (Dominaria United #69)
Hexbane Tortoise (Dominaria United #166)
Cold-Water Snapper (Dominaria #48)
Calcite Snapper (Worldwake #25)
Wandering Tombshell (Dragons of Tarkir #127)
Giant Tortoise (Arabian Nights #15)
Armored Whirl Turtle (Global Series Jiang Yanggu & Mu Yanling #7)
Horned Turtle (Portal #57)
Taeko, the Patient Avalanche (Foundations Jumpstart #39)
Vintara Snapper (Prophecy #132)
Silburlind Snapper (Shadows over Innistrad #85)
Giant Turtle (Legends #188)
Daring Thunder-Thief (Outlaws of Thunder Junction #41)
Wormfang Turtle (Judgment #60)
Phantasmal Shieldback (Foundations Jumpstart #8)
Shellephant (Unstable #121)
Steady Tortoise // Harried Dash (Alchemy: Wilds of Eldraine #25)

Though this query has ended, its relics still slumber in New Argive.