The thing is, X is DOUBLE the casting cost of the targeting spell. It’s not so bad if you’re redirecting a one- or two-drop spell, but it can get pricey quickly. Still, back in its day, it was a solid enough card, perhaps. They’re worth about a quarter ($0.25 USD) nowadays. It’s an interesting card, but more of a relic of a past time in Magic than anything useful today. Definitely a cool old card, though.