I hope this Answer is better then the answer the other guy did, but I believe one of the places where Giratina turns Origin Forme is Star Cave. I do know there is other places, but I can't remember what they are.
You need to give it the Griseous Orb to hold, and it will automatically change forme.
I'm quite certain that Giratina's Origin Forme is only availabe in certain dungeons rather than it being constant with some item of sorts. Serebii.net has more information on which dungeons give Giratina this feature.
If you go to a few certain dungeons, like star cave (I can't remember any others, sorry!) then giratina will be in origin forme.
No, it won't because Giratina's Origin Forme doesn't exist in Pokemon Diamond (or Pokemon Pearl), and neither does the Griseous Orb, which Giratina needs to hold in order to stay in Origin Forme outside of the Distortion World. No, it won't because Giratina's Origin Forme doesn't exist in Pokemon Diamond (or Pokemon Pearl), and neither does the Griseous Orb, which Giratina needs to hold in order to stay in Origin Forme outside of the Distortion World. Actually it will because it will still hold the Griseous Orb so it will still be in origin forme hope this helped :)
there are two forms, origin forme, and altered forme.
In diamond and pearl giratina turn in the altered form, only in platinum it show its origin form
Giratina Altered Forme is a character form from the popular Pokemon game series. It is actually Giratina's altered form.
im trying to find it too ... srry if i find out i will tell you but if you find out can you tell me
One advantage with Giratina's Origin Forme is it has better Attack and Special Attack but it has less defensive-related stats.
go to that mountain from shaymin village giratina is now origin! it wont be permanant but it only works on that mountain
Actually there is two: 1. Giritina origin forme 2. Shaymin sky forme
You get it in the end of the origin world in platinum.