Tooltip missing information.
This is obviously for those who are new to the game, and i know how it all works as it is supposed to. But GP, MF, EZ, and i think Yasuo's all have their Q, it specifies that yes, they do crit and apply on hit effects, but they do NOT apply spell modifiers. I think it should say that. (Does not apply spell effects.) Given these abilities are a little weird, there are way too many discussions about how they dont work. Especially since luden's echo was added. Yes, you figure it out after one game, but the tool tip is there for a reason and it should specify what does not work if the ability is unique or different in some way. Mostly for the new players.
I doubt it would ever happen, but it might make ap of these champs viable, not yasuo, but people already try to play MF and EZ as an ap champion, it might help a little if they worked, but the only issue i have personally is the tool-tips not saying it wont give spell-vamp or apply any other spell modification.