Event on Colossal Cavern

An aura of darkness cloaks the Castle of the Shadowcaster, a name spoken only in whispers around the campfire. You summon your own wizards, who can say only that Shadowcaster came to the dungeon from another world, bringing with him new powers and appetites. Some of the Guild elected to follow his dark path. Others refused and set off to establish domains of their own. But all must return here if they are to receive their elixir of life.