Izzet is the alliance of blue and red, and its premise is that the spell is the unit of genius. Blue brings the analysis, the card selection, and the patience to find exactly the right answer; red brings the impulse to fire it off and see what happens. The guild's decks are built around the cards other strategies treat as support: the burn, the card draw, the cantrips and counterspells. In Izzet, the instants and sorceries are the deck, and creatures are often just the payoff that turns spellcasting into damage.
The characteristic Izzet engine rewards volume. Effects that trigger whenever you cast a noncreature spell, prowess and magecraft chief among them, turn a hand full of cheap spells into a snowball: each cantrip both replaces itself and grows a threat or churns toward the next piece. The deck plays at instant speed when it can, holding up interaction and committing only when it has found the line that wins. At its most refined, Izzet is also the natural home of spell-based combo, where the right sequence of cards simply ends the game.
The tension in Izzet is blue's caution against red's recklessness. Lean too far into card selection and the deck draws spells all day without ever threatening to win; lean too far into aggression and it runs out of gas with the opponent still standing. The decks that work treat every spell as doing two jobs, advancing the board and finding the next card, so that the engine and the clock are the same machine.
