Each theme has a small number of possible card sets on that theme, distributed on a rarity basis, such that the specific booster that a player purchases will still be a random selection
The effect negates the effect of the target monster and puts it in an invincible mode other than battle.The main target is yourself, but it can also be used to prevent support cards from being received, or to erase the opponent's effect like a holy grail
This can be anything from attacking with an arbitrarily large creature to some sort of alternate wincon that deals an unreasonable amount of damage
They get banished at the end of the turn, but realistically thats only if the player doesnt do what theyre supposed to and either destroy them or synchro summon with them
9 Get A Starter Or Structure Deck Starter and Structure decks are some of the best ways for new players to get a full deck that usually have cards that work together pretty well
When you're buying online, ask for good, clear pictures of both sides of the card so you can judge its condition accurately