Participating McDonalds restaurants in Japan will be distributing Pokémon Trading Cards as part of their Happy Meal. The campaign lasts for only two days from
Saturday July 28th, 2012 until Sunday July 29th, 2012. Two cards will be distributed those days and those that purchase the Happy Meal will receive either a Meloetta Aria forme or a Meloetta Pirouette forme card.
Meloetta Aria forme knows the moves Sing and Psyburn while Meloetta Pirouette forme knows Slap and Acrobatics.
Source:
http://www.pokemon-card.com/campaign/mcdonalds2012/