Upon tainted soil, the keepsake must be attuned. It is rumored that Stratholme is where Frostwhisper succumbed to the Lich King. Upon those bloodied grounds he gave his life - freely and with motive - to become one of the undying. It is those grounds that must be found. There is one, an undead dissenter of the Scourge, freed by the Banshee Queen but loyal to the cause of the Argent Dawn. Find him: Leonid Barthalomew the Revered. He may know more. Seek out Light's Hope, adventurer.