pikachu ultra rare card Pokemon Sword & Shield Holo VMAX SWSH286 GEM MT 10 Special Illustration Rare Pikachu ex

They have a one-time effect

You look at a foe's hand, and you can cast them this turn with mana of any amount counting for that

Furthermore, the only Pokemon from the video games that enter this element besides the pure Electric-types are dual-types that are at least part Electric

Chart shows the price of Pikachu [Pokemon Day] #78 at the end of each month going back as long as we have tracked the item.

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Based on the past sales listed on TCGPlayer , the price seems likely to stick and might even continue to rise, with many near mint copies sold in the last couple days for around $15 with those in played condition going for $10 or $11