Forum:How does Ultimate Conductor Tyranno work?

According to the card text, "change all face-up monsters your opponent controls to face-down Defense Position."

Does this mean that if you have a single face-up monster that for whatever reason cannot be face-down (link monster, token), none of your monsters can be flipped? It reads like an all-or-nothing, so it would not be able to resolve? Weckar (talk • contribs) 19:00, September 3, 2018 (UTC)