Board Thread:Suggestions forum/@comment-27043702-20151128112216/@comment-27043663-20151128112842

Well in the books, it was used by Gondor to get troops from Rohan, not Dor-en-ernil, who would have been obliged to send troops anyway, being a part of Gondor and all. Additionally, you should be able to craft these from orc arrows and blood (a new item).