This is a simple idea. As we all know, the root of all evil when it comes to warclaims and PvP is the human playerbase. With the latest additions to nexus, one of the most impressive coding feats was the making of custom enchantments, namely magic resist and XP boost. This proves it is possible to make enchantments that directly affect other Nexus mechanics.
So here's my suggestion:
Custom Enchantment, "Humanbane"
Glyph shape to be determined by coders.
Each level of this enchantment adds +20% damage to personas with a human race when applied to a weapon. If applied to armor it reduces all incoming damage from said personas by 10% each piece.
Also adds +10% damage to wood elves, since they are half-human at this point.
+10% damage to orcs too, because lets face it, they're all Oren alts so it's the same.
This will mean Oren will lose just about every warclaim, Dunamis and Oren wil butcher themselves to death, effectively discouraging more warclaims from being made and achieving world peace!