39 cards where the cards aren’t reprints and the card is tagged “gains-protection”

Etched Champion (Scars of Mirrodin #154)
Cartel Aristocrat (Gatecrash #150)
Jareth, Leonine Titan (Onslaught #43)
Cairn Wanderer (Lorwyn #105)
Altar of the Wretched // Wretched Bonemass (The Lost Caverns of Ixalan Commander #10)
Altar of the Wretched // Wretched Bonemass (The Lost Caverns of Ixalan Commander #10)
Hexdrinker (Modern Horizons #168)
Questing Phelddagrif (Planeshift #119)
Council Guardian (Conspiracy #15)
Pristine Angel (Darksteel #9)
Radiant, Serra Archangel (Commander Legends #40)
Rayami, First of the Fallen (Commander 2019 #48)
Voice of All (Planeshift #19)
Pristine Skywise (Dragons of Tarkir #228)
Jodah's Avenger (Planar Chaos #42)
Lavabrink Venturer (Ikoria: Lair of Behemoths #19)
Knight of Dawn (Tempest #26)
Order of the Stars (Guildpact #13)
Rappelling Scouts (Mercadian Masques #41)
Mirror Golem (Mirrodin #208)
Mystic Familiar (Torment #11)
Empty-Shrine Kannushi (Betrayers of Kamigawa #2)
Hell-Bent Raider (Torment #101)
Grotesque Hybrid (Torment #63)
Keeper of Kookus (Visions #85)
Death-Mask Duplicant (Darksteel #115)
Masked Gorgon (Judgment #69)
Kami of the Painted Road (Champions of Kamigawa #23)
Opal Titan (Urza's Saga #26)
Opal Guardian (Time Spiral #30)
Thick-Skinned Goblin (Time Spiral #182)
Escaped Shapeshifter (Tempest #62)
Diregraf Escort (Avacyn Restored #174)
Resilient Wanderer (Odyssey #43)
Jeweled Spirit (Prophecy #12)
Knight in _____ Armor (Unfinity #17)
Fascist Art Director (Unhinged #11)
Greater Morphling (Unhinged #34)
Priest of Possibility (Alchemy: Dominaria #2)
Rainbow Knights (Astral Cards #9)

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