Guard Silvan:
Tell you what, if all you need is a sketch of Sakum, Guard Lef is a little bit of an artist and has already drawn a pretty good sketch of the creature.
But you need to do a favor for us first. I need you to eliminate some of the creatures around the Ruins of Despair for us. About 15 Skeleton Warriors,20 Ruin Imps, and 25 Bats should do it.
Once you are done, go see Guard Lef about getting that sketch.