Quote from Sheldon »
In the early days, when I had just the Phelddagrif deck, I'd carry around about 10 cards to occasionally swap in and out. Later, I built a whole modular deck once that could swap in a full color, but eventually found it to be pretty clunky.
I'm at the point now with my Mathas deck that for any card I want to add I would need to remove one of my redundant cards that do what the deck is supposed to do. Although, if I'm going to be completely honest with myself, I need to play the deck more and see if the cards that are currently in it perform up to my standards before 8 start trying to further tune it.