Riot, not every champ has to be the embodiment of something that relates to them.
Zyra's place holder lore, states she's the "Wrath of Nature" instead of ancient plant that got a second chance at life. Honestly....why do most of your recent lore mentions a champion being the embodiment of their nation/culture/emotion. The fact that you refer to Kalista as the embodiment of vengeance kinda urks me. Kalista was human, and now she's a spector. Calling her that makes her seem like some sort of god or demigod.
Even if it's a few people in Zaun, why does Jinx have people believe that she's the physical embodiment of Zaun's wrath/revenge. This is seen with a few other champions too. And tbh, the trend is growing dull. It kinda gives me the feeling they aren't their own person any more. The moment some one gets determined with a strong sense of something, they become and avatar of it, instead of just being them.
I am inclined to think Evelynn is the embodiment of lust enacting it's wrath upon mortals for sinning.