Mirage was the first official block structure in Magic: the Gathering. This new block structure consisted of three expansion sets and would continue for nearly two decades, finally ending with Khans of Tarkir in 2014. The new block structure also set up the precedent that the first set in the block also became the name for the entire block. Mirage block consisted of three sets: Mirage, Visions and Weatherlight.
The story concerns three of the most powerful nations of Jamuraa (a tropical continent modeled after Africa) — the militaristic kingdom of the Zhalfirins, the religious state of Femeref, and the trading province of the Suq'Ata empire. Zhalfir was the warrior nation, based mainly on red. Femeref was mainly white, and featured clerics and healers, while the seafaring traders of Suq'Ata were mostly blue. Mirage concerned these three nations and their struggle against the evil wizard Kaervek. Kaervek has imprisoned the powerful wizard and diplomat Mangara in an amber prison and the bulk of the story details the Jamuraans attempting to free Mangara. In addition to these events the planeswalker Teferi has caused his island to disappear from existence for almost 200 years. It is the phasing of the entire island that led Kaervek and Mangara to Jamuraa in the first place.