51 cards where the illustration contains “regional-variant”

Archangel (Media Inserts #29)
Ashes to Ashes (The Dark #39)
Assassin's Blade (Portal #80s)
Blaze (Portal Second Age #91)
Bog Raiders (Urza's Saga #119s)
Bog Wraith (Portal #83)
Carrion Wall (Eighth Edition #121s)
Charcoal Diamond (Seventh Edition #289s)
Coffin Puppets (Prophecy #60s)
Death Pits of Rath (Ninth Edition #123)
Diabolic Servitude (Urza's Saga #130s)
Diabolic Tutor (Odyssey #129)
Drudge Skeletons (Eighth Edition #129s)
Elven Cache (Portal #164s)
Fire Ants (Urza's Saga #187s)
Forest (Portal #212s)
Forest (Portal #213s)
Forest (Portal #214s)
Forest (Portal #215s)
Fruition (Portal #166s)
Horned Turtle (Portal #57s)
Hulking Cyclops (Portal #134s)
Initiates of the Ebon Hand (Fallen Empires #39c)
Island (Portal #200s)
Island (Portal #201s)
Island (Portal #202s)
Island (Portal #203s)
Looming Shade (Urza's Saga #139s)
Mindstab Thrull (Fallen Empires #40b)
Mountain (Portal #208s)
Mountain (Portal #209s)
Mountain (Portal #210s)
Mountain (Portal #211s)
Necrite (Fallen Empires #41c)
No Rest for the Wicked (Urza's Saga #142s)
Plains (Portal #196s)
Plains (Portal #197s)
Plains (Portal #198s)
Plains (Portal #199s)
Prosperity (Portal #66s)
Raise Dead (Seventh Edition #157s)
Raise Dead (Portal #107s)
Scathe Zombies (Seventh Edition #161)
Scathe Zombies (Seventh Edition #161s)
Soul Burn (Invasion #124)
Starlit Angel (Portal #30s)
Taunt (Portal #71s)
Unworthy Dead (Urza's Saga #163s)
Urborg Skeleton (Invasion #134★)
Vampiric Feast (Portal #114s)
Wicked Pact (Portal #117s)

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