@Meddler, a suggestion on a way to buff fervor to make it viable on adcs
Simply add : "critical strikes grant 2 stacks of Fervor".
Doesnt change anything for trynd or yasuo as they would already be getting 2 from being melee (no they wouldnt get 4, just 2) and it would greatly help crit aa adcs to stack it up a bit faster.
This also wouldnt make the current melee users of the mastery who are already good any stronger, i think its a solid idea.

are top 4 adc in lcs