The phrase "a mastery that" is correct and usable in written English.
It can be used when discussing a specific level of skill or expertise that someone possesses in a particular area or subject.
Example: "She has developed a mastery that allows her to solve complex problems with ease."
Alternatives: "an expertise that" or "a proficiency that".
Perhaps when people speak of Obama's "distance," they mean just this capacity to inhabit different points of view — a mastery that can seem more anthropological than political.
Immersion in the technical grants access to the full rip of the oceanic sense: a mastery that is a form of surrender.
For Marbury, like Kidd, moved the ball with a mastery that opened other possibilities that don't show up in the box score.
The crisp light of a later wintry afternoon is handled with a mastery that puts this panel on a par with the very greatest landscapes of the golden age of Dutch painting.
Steeped in African and Asian art, as well as in the Baroque and the modern (including the work of Brancusi, Le Corbusier, and the minimalists), Puryear exercises a mastery that feels widely and deeply wise.
Inside his office at Freemason Lodge, the Newmarket yard where he trains more than 160 horses with a mastery that makes him one of the most fascinating figures in British sport, Stoute is even warmer.
The films are well shot and neatly structured, suggesting a formal mastery that will come in handy in future commercial projects.
Indulge in the art of Thai massage -- a coveted mastery that originated from the time of Buddha.
It was what came of a life's preparation: an act of mastery that began with self-mastery.
Because the actors stayed together in permanent companies and specialized in playing the same role for most of their professional lives, they achieved a degree of mastery that had been hitherto unknown on the Italian stage and that must have made the rest of the theatre seem all the more artificial.
At 74, Mr. Eastwood has achieved a level of mastery that leaves him with nothing to prove, and so, unafraid of sentiment and willing to risk cliché, he has made a graceful, lyrical, devastating masterpiece -- the best film released by a major Hollywood studio this year.
