To do this, carefully examine the left side and find the card number
Cards from the GX , V , VMAX , and VSTAR eras should have fingerprint-like textures etched into the card surface
Now that includes inking a card like you normally would each turn but that also includes all the ways in which Sapphire can get extra ink on their turns including songs like One Jump Ahead and the new Friend Like Me, items like the Fishbone Quill, and the multitude of characters that mess with your inkwell like Belle, Strange But Special or even an opponent using a Hades, Infernal Schemer against you
Competitive and frequent players should replace outer deck sleeves every 3 to 6 months, or right before a major tournament
Thirty years ago, Cor Leonis fought Gilgamesh and managed to claim his arm, but was defeated and had to run
Now, the good news is that Magic decks aren't unchangeable, and after playing your deck, you can always go back and tweak your numbers