The majority of casinos in the USA use bridge-size cards when playing games like Texas Hold'em
A lot of the information ahead has been gathered through the efforts of many over time, and I have tried to mention them where possible (and have remembered)
The only real way to derail your combo is for an opponent to destroy Isochron Scepter or counter Nexus of Fate with an exiling card like Faerie's Trickery
From there, you can start dropping Tron staples like Karn Liberated and Ugin, the Spirit Dragon without compromising your mana base
Cards in this category can range anywhere from major creases and bends, major water damage such as being washed, rips and tears, holes, and even fire damage.
The other problem, of course, is that the social contract forbids true feudalism