Participating Gamestops will have a brand-new Pokemon available for download for free on March 4th.

Meloetta, the new mythical melody Pokemon, can be downloaded for either Pokemon Black and White or Pokemon Black 2 and White 2. The rare creature will only be available for three weeks, though for the duration of the deal, she will be available for free.

As a melody Pokemon, Meloetta has the ability to change forms in the middle of battle. When players download her, she will come as a level 50 Aria form, where she fights as a psychic and normal Pokemon. She can also switch to Pirouette form, where she battles as a normal and fighting Pokemon. Though Meloetta will come with some powers already included (Close Combat, Teeter Dance, Psychic, and Round), the shifting ability must be unlocked, which we've learned can be done by listening to a guitar performance in Café Sonata in Castelia City.

You can check out a trailer and some screenshots featuring Meloetta in action below.