What a Deck "Smoke Screen" is

ok so a deck "smoke screen" is basicly where you build you deck and you use your side deck cards to completely change how your build works and/or what deck it is, some decks take all 15 side deck cards to complete fully and some decks take a bit less then the full 15, anyway this is an example of a smoke screen

ill use a Machina Gadget build for this example

https://imgur.com/pOGYu

now that is the machina gadget side

and this is the smoke screened side of Light Beat

https://imgur.com/CXn9d

now as you can see it did take a full 15 card side to pull off the smoke screen

the best ways to do a smoke screen is to change how the deck works entirely, machina gadgets focus on field presence and pumping out higher atk point beaters
while Light Beat focuses on stunning your opponent and controlling the field, they dont bring out huge beaters so it will more then likely hurt your opponent cuz he woulda sided stuff for machina gadgets and most of the time what is sided for gadgets doesnt really hurt Light Beat

a successful smoke screen while difficult to achieve at times can be very suprising and will serve to through your opponent off balance, potentionally will win you the match in most cases, well dats all

very nice advice foxx