Forum:Book of Moon and Attacking Monsters?

If i were to activate 'Book of Moon' when my opponent declares an attack and switched the opponents attack monster to face-down, would they then be able to switch it back to face up during main-phase 2? One would think that since they already declared an attack they couldn't change the battle position, even if it were negated with book of moon, but my friend says otherwise. I highly doubt that you can still flip the monster back to face-up after it was book of mooned.

Necros165 (talk • contribs) 06:36, March 5, 2012 (UTC)