The Cards to Avoid and Don't in DeckBuilding

here are some cards that you should avoid in building or should be only put if necessary

Magical Mallet, Reload and Card Trader
These cards cost you card advantage but you will not really gain any benefits at all yes you trade your cards but you only make your life easier for your opponent If you activate all your Mallets and Reloads on your first turn, you've reduced yourself to a single card with which you plan to take on the opponent's six. If anything happens to that card, which it most likely will, you will, without a shadow of doubt, lose

Lightning Vortex
Yes you destroy your opponents monsters but what this card makes to be not good for deck building is its cost and i would rather choose dark hole which is far more better

Draining Shield and Magic Cyliner
you want to stop your opponents attack?then take them down with your trap card
These cards cost card advantage in exchange for Life Point advantage, which is a terrible idea. If you play these cards you're going to lose the game, because you didn't get rid of their powerful monster, and left it there on the field. That let's your opponent use that monster to attack you with, and if it has high ATK points, act as a big offensive wall to block your attacks.

Pot of Avarice
you may only use this card if you always put a lot of monsters in your graveyard as much as possible avoid this card If you really want to "recycle" your monsters, play cards that let you Summon them from the Graveyard instead because this card really makes your deck thick you should play this card if your thinning your deck at high speeds this card applies only for certain decks and not for everyone

all single use burn spells and traps and life point gaining spells and traps
If you're going to give up a card, do something more than a few points of damage.

Most Equip Spells
They are usually bad why? Because if the equipped monster leaves the field, or is flipped face-down, you lose all the Equip cards but there are exceptions to this rule are few and far between, but do exist, such as Inzektor Sword - Zektkaliber or Supervise.

attack boosting field spell cards
unless they have an additional effect its good but its better to play stronger monsters rather than wasting a field spell card

All Stall Cards
yes buying a few turns gives you more time to draw cards but your opponent still remain in control of the duel and will continue to apply pressure on you and now starting to accumulate cards to stop you stalling doesn't help you win it only makes your losing slower to your opponent Only play them if they actually are your deck's central idea or if they offer something in terms of synergy with your deck.


and now here are the things that you should not do in building a deck

Don't feel confined to one archetype
Just because you're playing a certain archetype doesn't mean you can't include other powerful cards like Neo-Spacian Grand Mole.

Don't pick cards because they will be helpful if the duel is going in your favor
pick cards that can both fill the roles or Pick cards that will be helpful if the duel ISN'T going in your favor

Don't be stubborn about your card choices
the best way in improving a deck is sharing ideas be careful not to be stubborn in trying out new ideas who knows it may turn out that the idea you rejected could have skyrocketed your deck's power or consistency. Don't absolutely insist on keeping certain cards and not trying others.

Don't be afraid to experiment
all even the best decks are consistently evolving there is no finalized deck Keep trying new things, and you may be the one to bring your decktype to the next level.

don't be afraid of life point costs
The only Life Points you should be concerned with losing are your last ones. All the other ones don't matter, because whether you win with 10,000 or 100, you still win. One of the biggest mistakes to make is think that Solemn Judgment is too costly, it's not, and the card WILL help you make sure your plays go through like you planed.

don't think of having a lot of life points means you win
Nobody ever won just by having a lot of Life Points. As I said before, the only LP that matters is your last one.

Don't just stick to one cards
Often times you'll be able to find a stronger, more effective version of the card you're considering using

don't make an otk deck thinking that it will be consistent
If you DO manage to make a consistent OTK deck, the next banlist will kill it.

don't make a deck based on the anime
Anime/Manga duelists are bad, and every one of them would be crushed by a halfway-decent real life player. because their decks have no staples and most of the cards are situational If you want to make a deck based on the Archetype they use and want to make it good by using staples, then do so. But don't copy the style or the deck of a duelist off the anime/manga.

Chance Cards are unreliable
A Coin Flip or Die Roll deck is bound to be inconistent. Cards like Snipe Hunter may have great effects but the chance that they are a minus is too much for most decks (there are exceptions, such as Fabled decks).

this is a nice guide. Good for all beginners.

yep.