Thanks DarthDestiny, but this was one of the Most Messed up way on how to Discover this.
For once I Wanted someone to do this first, but I turned out to be the First and not only that, When I discovered this messed up Mystery, a Pokerus hit my Brother's Rayquaza from out of nowhere.
The truth is that even though my Giratina lost a little too much Stats. without the Pokerus, my Bros. Rayquaza ended up having it instead, even my Giratina was Jelouse of my Bro. Rayquaza.
[Giratina: >=^( ]