It’s safe to say that monsters win games in the Yu-Gi-Oh! TCG. Having many powerful monsters in your Deck is a good thing, but how many is too many? Sometimes, you might have too many monsters in your Deck, or lots of monsters that are hard to Summon, and getting the right balance of Monster Cards in your Deck is one of the first things that many players learn to do.
The important thing you need to know about Monster Cards is that you can only Normal Summon or Set 1 monster per turn. That means, if you’ve got a hand with a lot of monsters in it, you won’t be able to play many cards this turn. When building your Deck, you need to keep this in mind, and try to balance out the number of monsters you want in your hand to the number of Spells and Traps you want. Most Duelists play about 20 monsters or so in their Decks, which means you should have a monster to Summon right away on your first turn, and almost always have one ready when you need another. This also means that your Deck has about 20 Spell or Trap Cards, and you can play as many of them as you want per turn to protect your monsters.
Some Spell and Trap Cards are like drawing a monster.
Building a powerful Deck takes a lot of practice, and requires everything to balance up well. Getting the monster ratios right is only the start, but it’s one of the most important things to look out for.