For a limited time (Up to Feb 4 10:59am) there is a chance up to get this character in the premium boxes. This new mickey also comes with music from the Fantasia movie during game play. But the music is only obtainable up to Feb 28 11:59pm. 
During regular game play it is just the regular song from Fantasia but during fever time you get that iconic song from the broomsticks scene in the short. To use the Sorcerer Mickey skill, you just click three times on the screen to create “fireworks” while Mickey stands in the corner directing you.
