Shadow & Light manipulation

[MasterDragon35]

[Flash Flyer - Sakura]

So, basically recur Shaddolls and other effects that trigger when face-up then?

I know this is Casual, but I should probably point out the former, because of their nature. 

 

Also triggers some other old stuff.

[Max_K]

Hi. This is a powerful support for flip monsters and can be used for protection. You can summon a penguin soldier and activate this card.

[Trebuchet MS]

Yes, I think we understand that. Shaddolls are Flip monsters too.
 

It's a better version of Book of Eclipse since the opponent doesn't get to draw during the End Phase. Flip-Flop Rocks don't quite benefit off this since lots of them only work when Flip Summoned, and this won't count.

 

The only drawback compared to Book of Eclipse is that since this card immediately flips things back up, it doesn't cause the Noble Knights to immediately lose all their Equipment, since once this card finishes resolving there will be face-up NKs to equip to. That aside, it's still a pretty good card.

[goodfusion]

This seems... very overpowered. There are a lot of powerful Flip effects out there, and this allows you to reuse all the ones on the field with just 1 card. For example, this would be stupid with Dice Jar, Cheepcheepcheep, Needle Worm, Magician of Faith, the Worm archetype, the the Shaddoll archetype, the Prediction Princess archetype, and probably many more.

It also allows you to reuse once per turn effects, such as that of Knight of the Red Lotus.

 

Personally, I feel that it should have a cost, such as banishing a card(s) from your hand, and flipping them face-up be delayed, e.g until the End Phase. That would make it a solid alternative to Book of Eclipse, while not being absurdly overpowered.