In tournament, as long as you have at least one Basic Pokmon card in your deck, you can't be punished for playing an impossible evolution cards (like Riolu+Lucario with M Lucario- EX ), you would just have cards in your deck that you are not able to play under any circumstances (you can't put M Lucario- EX into play without Lucario- EX )
The 9 most powerful cards (called the Power 9), have seen the biggest growth
The figures come from AppMagic, which estimates an approximate $2.18 in spending per player during that time - and thats only accounting for spending on Apples App Store and the Google Play Store
Now lets get to the deck boxes, shall we
At times, the customization varies as per the card deck dimensions since smaller cards are preferred to have cleaner looks
It relies on large commercial printers that specialize in game and trading cards