[elif]

In college wed use the library printer and paper cutter.

Put the 'proxy' cards in a sleeve with a regular card behind it.

Takes time and effort, but if you play one night a week or so it ends up more fun because you never know what someone is going to bring.

[antoinealb]

It is what I do with my flatmate to practice new matchups (in Modern). I recommend using http://www.mtgpress.net to print out the decks easily from a decklist.