I would surmise that a deck with 4 Contracts would be even more ridiculous than a deck with 4 Academies. You wouldn't need the Academy making all that mana for you to draw all of those cards.
Since everyone is on this kick of no banning, why don't we just ask Wizards to errata the ante cards to say: if you aren't playing ante, then ignore the ante wording. That way we could have a restricted Contract.
Because thats not what the card was for, it was designed to be brutal, only if u were willing to "up the ante".
They would never have made the card otherwise, without the ante thing.
I haveastrong feeling however, that your post wasnt serious!