Descend into the depths with Nagash's most relentless hunters. Thanatek's Tithe unleashes five elite Ossiarch Bonereapers into the shadowed catacombs beneath Embergard, pursuing truebone—the purest osseous matter—with merciless determination. Led by the formidable agent Thanatek, this Flex-style warband brings skeletal supremacy to Warhammer Underworlds' hidden battlefields.