Over a number of months The Pokémon Company is releasing Mythical Pokémon to eager fans, one per month. It's now released Mythical Pokémon Jirachi, which will be available in Pokémon X, Y, Omega Ruby and Alpha Sapphire until 24th April.
To get this 'mon you need to go to 'receive gift' (there's a guide at the source link below) in game; it has the following abilities.
In addition, and as shown in the trailer below, there's a special Jirachi offering in the Pokémon Trading Card Game, and some Toys 'R Us stores in North America are selling special Jirachi plush toys.
Will you be picking up this Jirachi in your copies of the 3DS-gen games?