JeremyGamingCurios shows that Duskblade isn't really an assassin item.

https://www.youtube.com/watch?v=vzi4J7eTGuY

It's an AD burst item. We're gonna see it on any AD bruiser or tank who has any sort of burst damage in their kit. Can't wait to see how fast Poppy blows people up thanks to this thing with only it as an offensive item :p