Fakes often show blurry, pixelated, or overly shiny foil that looks cheap. Modern sets (Scarlet & Violet era) use a specific holo patternany deviation is a red flag
Make a note of the prices found on each site and dig into any extra data available TCGPlayer has plenty, as shown above
she's another Simic commander with a special focus on lands, which is something longtime commander players have certainly seen before
To make Slifer an unstoppable monster you could manage your hand carefully or you could unleash its full power by using its signature move: Thunderforce Attack
For reference, the Spring, Summer, and Fall Hatsune Miku releases featured bonus cards with numbers 805, 806, and 807, respectively
This is effectively an incredibly powerful way of sending all of your opponents monsters to the grave