Shiranui saw Silva's Multi-Attack and realised it was a signature move that few people have witnessed.  "[i]Silva appears to be based on Arceus like how Saisei was based on Mew,[/i]" he mused to himself, "[i]Could this move be based on Arceus' signature move?  If it is, it would be of whatever type Silva currently possesses; meaning Liam would need to think about how to deal with a jack of all types.[/i]"  He started to puzzle over Silva's origin and creators.