Buried Power

Since time immemorial, the Drust have used runes to shape their magics. This remains true of the spells woven by Gorak Tul and his ilk. You will need some of these runes for your effigy to be effective. It is likely that some still exist at the site of his final battle, buried under years of soot and snow. Take this stone. It is empowered with the magic of the Thornspeakers and will react to Tul's spells. With it, you should be able to locate the runes, no matter how deep the ages have buried them.