Pokémon Go's Lake Trio, Azelf, Uxie and Mesprit, are available until tomorrow, and here is how you can get them on Timed Research Photo Safaris during the Sinnoh Tour Global event
Pokemon Go players can avail the Pokemon Go promo codes which are in existence with Niantic sharing about them on their Twitter account. Currently there are no codes in existence that can be redeemed for free coins within the app.