The card's total weight, its center of gravity and, ideally, the moment of inertia (which implies a homogeneous distribution of mass on the surface)
To add an extra layer of protection, consider placing your most valuable cards in toploaders
Not only can players purchase two copies of the Secret Lair Countdown Kit: An Encyclopedia of Magic, but theres also a bundle
We must also consider the potential for special events, such as anniversaries, reissues, or adaptations of the game into other media, which can all serve to heighten the profile and desirability of original sets like Alpha
Show and Tell is decent with the really game breaking cards but if you are only putting in good top end stuff it is a lot less worthwhile
It floods through the Hall of Lorcana, sweeping the Lore items out from the Great Illuminary into the land below