Like most Pokmon cards, the value of Lightning Energy depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Call of Legends)
However, you'll notice that because they're a little worse than the top options, nearly all of them are dirt cheap compared to the far pricier top dogs, making them strong candidates for budget builds
You can fully get rid of your opponents creature with some additional investment without the fear of having it return the battlefield when yours leaves
Next up we have an extremely unique and much sought-after card
Nether Shadow wanted a lot of creatures going to the graveyard
Every deck in Magic is vulnerable to different sequences of bad draws: not enough lands, not enough spells, color screw, no interaction, only finding half your combo, and so on