This card is one of the best removal spells ever printed in Red, probably second to Lightning Bolt, and it's so powerful that it dominated Standard and has been seen in Modern as well
The upside is you can play these as well as a Land, allowing you to get ahead of the curve
The issue came to a head in Phyrexia: All Will Be One with its six styles: Ichor, manga, Phyrexian language, borderless concept art, and Oil-slicked raised foils
I have never returned to that style of deck in any format, and I do not know if I ever would, but something about this deck has always stuck with me
Near-mint condition Rainbow Energy cards can sell for hundreds of dollars
For example, Charizard Holo cards from the 1999 base set have been known to fetch over $5,000 to $10,000 despite the fact that there are over 10,000 of them in circulation