YoYo, be nice. I could comprehend it. Anyway, I see where he's coming from too. If your opponent is usinga mono deck, you could probably already know what he'll have in his deck unless you haven't been in the game a while. And if they're playing rainbow, then it's slightly more useful, but still not worth the space.
Against an AI you haven't encountered before, though, is a defferent story of course, but those can be researched to find out what they'll have. (unless its AI5, in which case your on your own.)
The card draw is the only thing keeping this from being from totally useless is the card draw, which, like Sundial, is one card for another card, basically meaning that if it wasn't there it would have made no difference.