Combo

A beatdown deck is one of three main types of decks. A combo deck aims to win by using a few cards to devastating effect.

Playing for no cost
Playing cards for no cost has been a classic combo move. There are many ways of doing this, including:
 * Reanimator: Put creatures into your graveyard, then bring them back with cards like Inferno Gate and Inferno Sign. This tactic led Inferno Gate to be banned and Inferno Sign to be restricted to 1.
 * Transmogrify: Rearrange the top card of your deck so that a powerful creature is near the top, then cast Transmogrify to play it. Alternately, run only powerful creatures in your deck and use psychic creatures as your main creature body, then cast Transmogrify to easily play that powerful creature. These types of tactics led to Transmogrify being restricted to 1.
 * Heaven's Gate: Gather powerful blocker creatures like Syrius, Firmament Elemental and Milzam, Spirit of Miracles, then play them with Heaven's Gate.
 * The Door of Miracle and Mystery
 * Emperor Chirico: Use Amaterasu, Founder of the Blue Wolves to cast spells like Crest EVO Charger to quickly get to 8 mana, then play Chirico and gain a large field advantage. This tactic led both Amaterasu and Chirico to be restricted to 1.
 * God Saga

Instant death combo
An instant death combo deck is a deck that wishes to end the game in one turn (but not necessarily the first turn).

Infinite loop
An infinite loop deck wishes to repeat a simple action each turn to lock down the opponent.

Trigger deck
A trigger deck contains many shield trigger cards to play them somehow, like with Benzo, the Hidden Fury or Marshall Queen.

Madness
A madness deck (named after the similar Magic: The Gathering ability) is designed to play cards that can be played when they are discarded during your opponent's turn, like Terradragon Arque Delacerna and Baiken, Blue Dragon of the Hidden Blade. Since many of these creatures have "Admiral" in their names, they are sometimes referred to as Admirals. Cards that facilitate playing these creatures include Hundred Eyes, Secret Spirit Treasure and Antionette, Beautiful Battle Dragon Princess (in combination with something that can destroy it on your opponent's turn like Super Shachihoko Castle and Falconer, Lightfang Ninja).