I don't have either at the moment. But I can get the Snover, albeit not in a Dream Ball (from Friend Safari). Were you only interested in Dream Ball Snover, or is there another ball you'd accept it in? I might be able to get a Thundurus from Alpha Sapphire too. Do you need certain IVs on it, or just any combination that yields HP Ice? I assume you're planning to Hyper Train it since HP Ice means imperfect IVs.