@20thCenturyFaux Zilean's new passive doesnt really solve anything.
And if broken enough, it opens the doors to make Zilean unbalanceable around such mechanic, which leads to nerfs.
Why? Because Zilean is being shoehorned as a support, so he will be one of the last in his team to reach max level due to duo lane + roaming.
So in the end, the passive is still useless at max level. One thing is an early game passive falling off lategame, another very different is a passive 100% dissapearing lategame. Also, again, those changes disregard Zilean's midlane role too.
Didnt Riot not learn that passive experience bonus arent balanced? Morde is extremely binary and toxic.
So depending on the gain rate of the passive and its range (could be even used to level up your jungler while midlaning?), this new passive could either end up extremely strong or completly underwhelming. Either way, passive exp bonuses are unfair to the enemy team.
TL;DR: I think a passive that has to do with the rest of his kit instead of making Zilean a rare candy machine could be way healthier.
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So he isn't being "shoehorned" into the support role.