Magic: The Gathering deck types

Gameplay of the collectible card game Magic: The Gathering is fueled by each player's deck of cards, which constitute the resources that player can call upon to battle their opponents in any given game. With more than ten thousand unique cards in the game, a considerable number of different decks can be constructed. Each card is designed to have certain strengths (and sometimes weaknesses) and therefore a significant part of the game is determined by which cards a player chooses to include in their deck. Broadly speaking, decks can be loosely classified based on their play style and mode of victory. The game's designers often explicitly create cards which are intended to fuel one or more of these given archetypes, in order to create competitive balance and diversity.

Most classifications of decks begin from one of four major strategies: aggro, control, combo and midrange.

Aggro (short for "aggressive") decks attempt to reduce their opponents from 20 life to 0 life as quickly as possible, rather than emphasize a long-term game plan. Aggro decks focus on converting their cards into damage; they prefer to engage in a race for tempo rather than a card advantage-based attrition war. Aggro generally relies upon creatures as a cumulative source of damage. Aggro decks can quickly overwhelm unprepared opponents and proceed to eke out the last bit of damage they need to end the game. Aggro decks also generally have access to disruptive elements, which can inhibit the opponent's attempts to respond.

Control decks avoid racing and attempt to slow the game down by executing an attrition plan. As the game progresses, control decks are able to take advantage of their slower, more powerful, cards. The primary strength of control decks is their ability to devalue the opponent’s cards. They do this in four ways:

Combo decks use the interaction of two or more cards (a "combination") to create a powerful effect that either wins the game immediately or creates a situation that subsequently leads to a win. Combo decks value power, consistency, and speed: the combo should be strong enough to win, the deck should be reliable enough to produce the combo on a regular basis, and the deck should be able to use the combo fast enough to win before the opponent.

Many decks have smaller, combo-like interactions between their cards, which is better described as synergy.

A typical midrange deck has an early game plan of mana ramp and control, but begins to play threats once it reaches four to six mana. A midrange deck will often seek to play a reactive, attrition-based game against aggro decks and a more proactive, tempo-based game against control decks. Colloquially, this is referred to as "going bigger" than aggro and "getting in under" control.

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