It happens to every team.
Sometimes, it's fate dealing a crummy batch of cards to you. Other times, it's a self-inflicted wound, like not paying enough attention to what's available.
And, of course, sometimes stuff just happens.
Whatever the case, there are always drafts when a team looks back a few years later and would give anything for a mulligan.
The Mavs in the 1990s? Oh, my. We had trouble narrowing this list to five.