The strategy of the deck is simple : we use the effects of impcantation base and ritual engine coupled with rank 6 ritual monsters to create a board and access to an OTK.
To help that strategy we have cards like Caius and BLS that can clean the board pretty easily with the offensive ritual monsters. We can also burn a little to accelerate the KO.
The absolute ritual spell can also use Caius and BLS since they are wariors to invoke easyly your Cyber Angel monsters, even from the graveyard.
If you play first you have the possibility to prepare a defensive board with Kristya and Natasha plus some extra monsters as Photon Lord.
The extra deck is usefull to struggle against some match up since we don't have any obligation to play specific cards.