Short answer: you can't just by looking at the card in isolation
Booster Pack [PRB-02] x2
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Electric Type Pokemon Mystery Slab PSA 10 or CGC/BGS/TAG (English or Japanese) $99.95 Add More Slabs - Any Type (FREE SHIPPING) Please choose Add Mystery Pokemon Cards (FREE SHIPPING) Please choose Add Pokemon Stickers (FREE SHIPPING) Please choose In stock: 1 available 1 Save this product for later Electric Type Pokemon Mystery Slab PSA 10 or CGC/BGS/TAG (English or Japanese) Product Details Electric Type Pokmon Mystery Slab Blind Bag Whats Inside: 1 Collectible PSA, CGC, Beckett, & TAG Graded Pokemon Cards (graded 9 or higher) Chance to receive higher-end chase slabs valued at $200 from our premium inventory Card will be a holo Pokemon card Graded 9, 9.5, or 10 Could include Special Illustration Rares, Illustration Rares, Promos, Double Rares, Ultra Rares, Reverse Holos, Rares, Secret Rares, etc

9 Dark Strike Fighter In the early Synchro era, there weren't many truly good Synchro cards available to players at the time, save for the likes of Stardust Dragon or Thought Ruler Archfiend, both of which would be overshadowed quickly with each new set released