Not that they need new forms, but it didn’t feel right to not do anything with them. A simple wannabe-Arceus form for Giratina.
And what I’d call an unbound form for Arceus. Playing off the ‘let the there be light’ origin of the world, which would have been cool if ultra Necrozma hadn’t beet me to the visual idea.
Drawn in procreate 
Pokemon- Arceus and Giratina