The restriction the passive current state created for his build is unacceptable. Especially if you are against a team without AD (I saw it today in ARAM). Not to mention the times that your teammate Don't build any of your upgradable items.
WE DONT NEED FANCY ITEM NAMES!! Just give a name to the effect And make it work on the item with the highest stat in the build.
I mean, I wouldn’t complain about a Masterwork MR item for him beyond Abyssal/Infernal Mask...but that might be the only thing I add.
BEHOLD, the almighty ornn-ified Dagger
I don't think it should work with every item. That's a lot of (IMO) unnecessary dev time for plenty of items that would get glossed over (looking at you Mikael's Crucible, Mercurial Scimitar, and Edge of Night) and it might not be healthy for the game or Ornn. His current item set allows him to fill a certain niche, whereas adding upgrades for every item would result in him becoming overly popular and too strong.
I think there should be a few more items added, though.
I honestly don't want to see items like 
getting all sorts of upgrades. If your teammates don't build the upgradable items, it's their loss.
