Griseous Crystal
Griseous Crystal's can be used to change Giratina into it's Origin Form.
How to find them
Griseous Crystal's were obtainable during the Darktober Event 2015. At the moment there is no way to get it.
How to use it
The Griseous Crystal can be used to change Giratina into it's Origin Form. This can be done by giving a Giratina the item to hold and it will change forms. If the item is removed from the Giratina, it will go back to it's regular form.
Other
- Griseous Crystals are tradeable.