Using decks

[Typhlosion King]

I'm not sure if this goes here, but I was wondering what accomplished players think about using a deck that you saw someone else play at a tourney, and then changing it? If it's a really original idea, I mean.

 

[Big Daddy Snorlax]

This forum is for card ruling questions, but your question has been discussed at length here on the Gym. Try doing a search on "netdecking" and see if you can find some of those discussions.

BDS