Although they are distinguished in the same way as standard rares (with a black star), their card number will exceed the total number listed for the set
others are counterfeit, resealed or tampered product dressed up as a bargain
Aminatou, the Fateshifter Commodore Guff Daretti, Scrap Savant Dihada, Binder of Wills Elminster Estrid, the Masked Freyalise, Llanowar's Fury Jared Carthalion Jeska, Thrice Reborn Lord Windgrace Minsc & Boo, Timeless Heroes Nahiri, the Lithomancer Ob Nixilis of the Black Oath Quintorius, History Chaser Rowan Kenrith Saheeli, the Gifted Sivitri, Dragon Master Tasha, the Witch Queen Teferi, Temporal Archmage Tevesh Szat, Doom of Fools Will Kenrith
Once you have confirmed a cards authenticity, store valuable cards in protective sleeves and rigid top-loaders immediately
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If you couple this with Exploration, you can see how this can get out of hand quickly