The Wardens of the Lair of the Keeper report directly to the ancient dracolich Mazyralyx. Each Deathbringer strives to have their soul collected by the prakhutu and trapped within the Lair - all to serve the Gatekeeper through death and beyond. The tribe uses the dead of the other tribes as weapons by reanimating them after battles using their Overlord’s profane rituals.
Source: Paladins of the Wastes