The legendary Pokémon Latias is currently available for capture through a special event on the Nintendo 3DS version of Pokémon Shuffle.
Latias is catchable in an Escalation Battle, meaning its catch rate will increase along with the stage level each time you complete the stage. In addition, a Latiasite Mega Stone is rewarded for clearing level 50 of the stage. The event to catch Latias has already begun and will last until October 12th.
The other legendary Pokémon Keldeo is also making a return to the 3DS version of Pokémon Shuffle, and making its debut on mobile. The event ends October 5th, meaning players will have one week to catch it.
Pokémon Shuffle is available for the Nintendo 3DS and smartphones.