To get the Pokemon TCG Pocket Mew card, as mentioned above, you need to complete the Kanto Pokedex, which means getting at least one of every of the original 150 Pokemon in the game. Once you do so, an option will come up in your "missions" tab to complete the quest and reward you with the Mew card itself, like any other mission reward.

My finger taps the Pokémon TCG Pocket icon to open the game and collect my rewards. The light of a hundred dying suns immediately fills the room. Even on my phone’s darkest setting, Pokémon TCG Pocket is bright as hell.

Some packs in Pokemon TCG Pocket are presented backwards from the get-go, but does that mean they have better cards?