The special ability for ANY creature in the game to make bonded pets go wild or even unbond is ALWAYS a bad idea. Even though you have clearly mentioned that ability for platinum and chaos dragons in the patch notes, it will still end up screwing up someone's cherished pet, which is just not acceptable. Instead, I think you should just make the dragons ignore the resistances on tamed dragons when attacking. Then you don't have to worry about greater dragons being too powerful for the event and you don't have to worry about players coming here and saying "WHAT HAPPENED TO MY DRAGON!!!!" Please, listen to me on this one. I guaruntee you that someone will end up losing a cherished pet and that could easily be enough to make them quit the game.