Papi/Manny said:
A friend and I have already broken the unlimited format twice over.
Must all your posts be drenched in ego?
Anyway... leagues don't restrict the cards you play, which has it's ups and downs. The few times I do play with my unmodified cards, is when I visit my friends' places. Older cards seem to transform into collector items, keeping some from using 'em. I don't blame POP for not sanctioning Unlimited events though; it's worse than Magic, where at least things like Black Lotus and Ancestral Recall are restricted to one per deck. If you intend to use one, I suggest the place you go for casual play. But give your opponent a well needed heads up.