Valor Passive Idea

I was thinking that perhaps a good Valor passive that would make him a bit safer (as you are building a squishy ADC that turns into a melee assassin) would be that he ignores a certain percentage of damage, ala Amumu Tantrum. It would obviously need to be properly tuned, but it could go something like this:

Soaring Heights: Valor's flight makes him a difficult target to hit. While Tag Team is active, Valor ignores X% of ALL champion damage dealt to him. Scales directly with number of enemy champions within vision radius (W active counts)

That last part would be to make sure Valor doesn't become more OP at dueling and chasing, while also becoming a bit more durable in teamfights and larger engages. Yes, I know, you aren't supposed to use Tag Team for teamfights, but it would still be nice (plus it adds a unique interaction with Heightened Senses active).

And in case anyone doesn't know, Valor is Quinn's ult form