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For those who beat DC15 Knowledge Local, Attacking from the hill land makes sense as the huge mobility granted by the Worgs could come into play. Its the most obvious solution.

Normally Veltar would not be able to make an untrained Knowledge check, but since they are his favorite enemy I'm going to say he can, and I believe he gets a +2 to it as well for favored enemy. He also knows the lower DC knowledge.