This is a branch of the parent thread "The 'Legacy' Mechanic & Destruction".
http://www.bgdf.com/node/13687
After reading the posts from the above thread, I had an interesting idea about using perforated cards in a CCG. Each card would contain perforated sections that contain special abilities. Some perforations provide special abilities by keeping them on, and some provide special abilities by ripping them off.
Here is where things get kind of mean. In a real game, your opponent can use their special abilities to tear one of your card's perforations off. When this happens, your card loses its ability from then on. Because of this permanent effect, the game would be much weightier since your cards can be damaged during the game.
This is a continuation of the above post (I didn't realize you can't edit the first post).
A damaged card could tremendously alter a player's deck strategy and require the person to find a replacement card.
To prevent super powerful cards from being ripped up by your opponent during a game, a player can fill their deck with defender, blocker, and sacrificer cards. When your opponent attempts to hurt one of your important cards, you can take one of these weaker cards and rip a perforation off of it instead.