29 cards where (the card is available on Paper) and (the artist name includes “leon” and the artist name includes “tukker”)

Aeronaut's Wings (The Brothers' War #231)
Armored Armadillo (Outlaws of Thunder Junction #3)
Artificer's Dragon (The Brothers' War #291)
Cityscape Leveler (The Brothers' War #233)
Clay Champion (The Brothers' War #230)
Creosote Heath (Outlaws of Thunder Junction #255)
Explosive Derailment (Outlaws of Thunder Junction #122)
Fountainport (Bloomburrow #253)
Hallowed Fountain (Ravnica: Clue Edition #277)
Invasion of Kaladesh // Aetherwing, Golden-Scale Flagship (March of the Machine #234)
Invasion of Kaladesh // Aetherwing, Golden-Scale Flagship (March of the Machine #234)
Invasion of Ravnica // Guildpact Paragon (March of the Machine #1)
Invasion of Ravnica // Guildpact Paragon (March of the Machine #1)
Invasion of Vryn // Overloaded Mage-Ring (March of the Machine #64)
Invasion of Vryn // Overloaded Mage-Ring (March of the Machine #64)
Luxurious Locomotive (Outlaws of Thunder Junction #244)
Marit Lage (Dominaria Remastered Tokens #4)
Mishra's Foundry (The Brothers' War #265)
Mishra's Foundry // Mishra's Foundry (The Brothers' War Art Series #46)
Mishra's Foundry // Mishra's Foundry (The Brothers' War Art Series #46)
New Argive (March of the Machine Commander #59)
Platoon Dispenser (The Brothers' War #36)
Restless Anchorage (The Lost Caverns of Ixalan #280)
Restless Anchorage // Restless Anchorage (The Lost Caverns of Ixalan Art Series #42)
Restless Anchorage // Restless Anchorage (The Lost Caverns of Ixalan Art Series #42)
Rootwire Amalgam (The Brothers' War #203)
Skitterbeam Battalion (The Brothers' War #165)
Skitterbeam Battalion // Skitterbeam Battalion (The Brothers' War Art Series #21)
Skitterbeam Battalion // Skitterbeam Battalion (The Brothers' War Art Series #21)
Sterling Hound (Outlaws of Thunder Junction #249)
Stomping Ground (Ravnica: Clue Edition #281)
Sumala Rumblers (Ravnica: Clue Edition #45)
Terror Ballista (The Brothers' War #290)
The Key to the Vault (Outlaws of Thunder Junction #54)
Welded (The Brothers' War Jumpstart Front Cards #4)

The message was clear to Sorin—time to search for something else.