Why do Fizz and Ekko have % missing health damage?
Serious question. Talking about the passives on their autoattacks.
In my opinion, Tank Ekko and Bruiser Fizz are obnoxious builds that would be useless builds if not for their incredibly potent % missing HP damage which allows them to shred through tanks and squishies alike. I don't see how it helps them do their intended assassin role any more than flat magic damage would.
The only justification I can see is that it gives them damage reach when they're behind, but I feel like it becomes obnoxious against other tank champions when they're ahead. And again, I don't see what flat damage doesn't against squishies that %missing HP does.