Duke Lankral at The Shadow Vault wants you to burn 10 Vrykul Banners.
Let us see if we can further weaken the resolve of the vrykul, [player].
Each day I wish you to travel to Jotunheim and put their banners to the torch. It may seem a trivial thing, but to see their ancestral home vandalized on a daily basis will demoralize them more than any physical punishment you can inflict.
At least... it can't hurt.