Well, I know how to do the swap trick.
But I dont know, and I want to know, how to do with this "Magic Card V2" and, if possible, without the "Magic Strong CD"...
In Racketboy's website dont have nathing about about that. Or I dont see
---edit---
IT WORKS without the strong CD! (Funciona kratos!)
The problem with the card is the slot on is puted
If I force the card to down it works but if I dont, dont work. Maybe some damaged pin on the card or on saturn

..
Puted the card, the game and turn the saturn ON. When it works, It show the animated sega saturn's logo and the blue sega's logo like all games but, before that, shows some leters saying "Magic Card V2"
Before that the Saturn go to the "audio play screen" and say to change the CD for one original and press reset.
I do that and it loads the CD again even the blue sega's logo and go again for the "audio play screen" but now, it tells to change the original CD for the backup game and press start in the pad...
and "vuala" ...
Sorry about my english
(kratos, se nao percebest o meu ingles explico melhor

)
thanks for all suport
---edit2---
now it works very good!!! If I plug the card but before I push a little to up (without disconect) it works without problems!