Thread:Sonic879/@comment-25068195-20151120014207/@comment-25068195-20151128024039

https://www.youtube.com/watch?v=wBBdwhiNGvo

At 7:15-7:44

https://www.youtube.com/watch?v=cy7jyw7WABw

At 0:57-1:11

That's how Kari Kamiya uses her crest and Twilight drinks a potion to make the light glow brighter to show everyone the vision of the past. When all Legendary Pokémon all fight each other causing an apocalyptic war 1,000 Years ago.