Last time around, I profiled the second of Tarkir's clans, the hissing traitors and wicked plotters of the fens, black-green-blue's Ruthlessness overlords and users of the Dragon's Fang, the Sultai Brood. Now it's time for some decidedly more pleasant-seeming people for the third Tarkir wedge clan group. Here's how the clans work:
The one major mechanical-slash-flavorful thing we know about Khans of Tarkir is that during the time period that the first set of the block takes place in (for this is a block that doesn't take place in a linear time fashion, as it were), the wartorn plane of Tarkir is divided up between five warring clans, each representing a "wedge" tricolor combination. Usually, this means a color and its two enemies, but for Tarkir this represents a color, one allied color, and one enemy color, for reasons that have yet to be explained (though this is the same as the usual idea in most practice).
The clans have a love-hate relationship with Dragons - having killed the species all off, they continue to revere one aspect of the great monsters, and embody that with a symbol drawn from a Dragon body part.
The Sultai are very smart, but selfish and evil. One of the other clans that contains blue is intelligent as well, but much more noble and giving. This is actually the blue-centered clan, the Jeskai Way. These martial artists and meditation scholars respect Cunning, and revere the Dragon's Eye as their symbol. They live high up in the mountain ranges in secret monasteries, or in secluded lake areas, their activities obscured by mist. The Jeskai seek enlightenment and what they lack in raw strength they make up for in their well-thought-out strategies.
The Khan of the Jeskai is a woman named Narset, a Human sage who is not only one of the plane's greatest fighters, but one of its greatest scholars as well. The other Jeskai respect her very much, although likely follow their own hearts most of all, and little else is known of her other than the fact that she has a "great destiny."
Aesthetically, the Jeskai come from some of my personal favorite fictional tropes - the ones that make up classic martial arts movies. The wuxia aesthetic is reflected in the use of the creature type Monk, the shaven heads, and the scarves and martial arts gis, as well as the whole hidden-temple-of-secret-techniques idea.