Forum:Fiendish Chain, Book of Moon and Negated Effects

So a situation happened when a few friends of mine were dueling that I just have to know about. Someone had Number 103 Ragnazero out while it was being effected by Fiendish Chain and they claimed that they could activate the effect of Ragnazero even while being effected by fiendish chain since a previous turn but it would be negated. They would then claim that before they would have the negation from the effect being allowed to activate part resolve they would activate book of moon putting the monster face-down then since the monster is no longer face up being affected by fiensish chain the original effect would be able to go off.

Can this actually work?

Also, if they were to first activate and chain fiendish chain to the effect of Ragnazero but then chain again with Book of Moon would Ragnazero's effect have worked or disappeared?--Eternumblaze (talk • contribs) 22:17, June 8, 2014 (UTC)