I'm just saying fight them on the waves. Do not give them more Bloodshed than is necessary. Excess retaliation just invites further Excess in the form of perfect Chaos Warlords.but if they have food , have ship ,Korne slanessh or tzeench will very happy, because nosca will have a big party . If i follow with your think , i fell give up is the best way
we not attack noscan , not mean they will not come. you know what are they. They Are all crazy
Yes, the current system of die rolling means the outcomes are subject to Change, but without too many successes, it tends to be mired in a Stagnant status quo.
So basically, don't court Khorne or Slaanesh. And don't let Tzeentch or Nurgle gain prominence over the other.
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As a side-note, between the Bonelands Waaagh!! and the upcoming Dark Crusade of Centigor, now is not really the time for invading foreign lands.