Doing so will net them a free shiny Enamorus. This offer marks the first occasion on which the ultra-rare variant of the Legendary Pokemon is ... the completion of the Generation 4 Pokedex via ...

However, Shiny hunting isn’t easy, particularly for rare and Legendary Pokemon, some of which don’t even have Shiny versions available. But now, one more Shiny Legendary Pokemon can be added ...

You'll also have a chance to encounter a Shiny Groudon during the Legendary's encore stint as a Raid boss. However, your odds of finding one are fairly slim, and you won't know if Groudon is Shiny ...