Adding more Passives and Actives to ap items makes Mages even more supportive
We don't want mages to be supportive, we want mages to be a threat.
Here is a Context: A teamfight just ended and everyone is low. An enemy Lux is coming. Zed: Guys Lux is coming let's kill her Lux Dies
Another context but a different role: A Teamfight just ended and everyone is low. An enemy Vayne is coming. Zed: Guys Run! Vayne is coming. Everyone dies to Vayne.