'becomes magical' is a correct phrase that can be used in written English.
For example, "The night sky becomes magical when the stars come out."
It becomes magical, mysterious.
Then, the game becomes magical.
"This becomes magical, like a Monet, almost".
The occurrence of music becomes magical.
"The familiar journey from Old World to New becomes magical in her hands," Nora Berkley Krug wrote in these pages earlier this year.
And when I got to know him a little more, then you start to notice that there's a connection between his work and him, what it is that he thinks and feels, and that's when it just becomes magical.
"When do the eyes become magical?" Wrinkles asks, anxious to find his lost magic eye.
As the group moved through its tour, the mundane often became magical.
Although "Monkey" had witty recorded music by Paul Sullivan, the action never became magical enough.
Darkness became magical in this work, which they presented on Sunday night as part of the City/Dans series of the Danspace Project at St. Mark's Church.
As with previous collaborations between Banks and the bold illustrator Boris Kulikov Maxax's Words, Maxax's Dragon"), words become magical amulets that transmogrify the world around Max. Anything can happen in the castle Max constructs, simply by manipulation of the letters on the blocks.
