NOTE: All cards removed from the starter deck that arent in your bank are permanently deleted.
Before buying the booster packs you must first understand how the process works since we use decks as the set:
-Each sets contains 30 monster, 15 spells, 15 traps (in the main deck) And 15 extra deck monsters. (no cards in side deck).
-Each booster pack contains 7 cards. 5 main deck cards and 2 extra deck ones.
-The main deck ones are the 5 first drawn cards by the shopkeeper.
-The Extra deck ones are choosen by:
1- rolling a dice and then the shopkeeper must give out the cards that were placed in the extra deck equivalent to the result.
(EXEMPLE: shopkeeper rolls a 2. The client Receives the second card in the extra deck. (from left to right.) )
2- The client reveals a number between 7-15 and he gets the card depending on the order.
(EXEMPLE: client declares 8, he gets the eight card in the extra deck *from left to right*)
-The Client then puts the useless cards in his bank. (a bank is basically a deck on DN where you put the cards you dont need for your deck.).
-If you play a card from your bank you dont need to remove it from your bank in order to play it in your deck. Homever you must have the number of copy of a card  equal or less from the number in your bank.
(EXEMPLE: you have 2 sangan in your bank. You can only use 2 or less sangan in your deck.)
-You can only have 1 Bank. (Unless you buy more for 50CP)
-The side deck can be used to store cards.
-You can "toss" cards you do not need in order to save space in your deck either after buying or will deck building. Homever, you cannot use a card once it was toss *unless you have another copy of it* ALSO DO NOT FORGET TO TAKE SCREENSHOTS!!!!! IT IS YOUR RESPONSABILITY IF YOU EVER FORGET THE CARDS YOU PULLED