The thing that interested me the most about this field was Doom Desire. Considering the lore behind Jirachi and what it has done in the official Pokemon story it would be interesting to see what would happen with a Jirachi in the wrong hands in this world, let alone a pulse one. I'm too rusty on the details of the story in Reborn at this point,m since it's been too long since I've played, so I'm not sure if there's anything obvious that will happen with Jirachi that I'm unaware of.