I actually think Bureacrat is extremely underrated, and while it's not even a good card at all, I don't know that it's more than slightly below average. There are a lot of things it works with, though it seems that with ever new set, it seems it gets less and less likely that it'll be a good card a) because there are more good 4s to compete with, and b)wherein silver itself is increasingly less important.
But I think it compares pretty decently to Explorer, which is admittedly a pretty horrid $5