The game expects you to ramp into this attack with cards like the Baby Pokmon (whose attack attaches Energy to your bench for free) and Ho-oh ex (whose attack generates exactly the three Energy types needed by Lugia), since the game's random Energy generation means that just being able to use it once without these effects is a pipe dream at best, and only getting it off a single time probably won't even win the game

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However, its no surprise when its ability allows it to be played straight from the hand, something foreign when it comes to Trap cards, and negates all the effects of one of your opponent's monsters
Pikachus holo cards from 2021s collection are still in the $10-15 range on eBay, so its likely that Pikachus value wont drop anytime soon
Grasp the role of mana as a resource, its generation through land cards, and how it is utilized for casting spells
But I also think the range of reasons is much broader than the least charitable view