A ripple spread across the world. The sky turned white and the clouds became a riot of colours. In the following weeks chasms opened in the ground, and the less populous regions seemed to change. As months passed cities became isolated from each other as teleportation magic went awry and crossing the open expanses left many unhinged or dead.
A city of Artificiers attempted to protect carriages and the horses which pulled them, from the odd influences, eventually creating horse-less conveyances which came to be called the "Death Chariots" or "Death Coffins". Safer than other means of travel, they were avoided by all but the reckless, dimwitted or desperate, for the death rate was still high.
One year on couriers semi-regularly criss-cross the network of cities to ship luxury items, potion ingredients and packages for the Artificiers guild.
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The sun is high, the road is bumpy and now a band from the wild wastes are bearing down on your vehicle looking to capture you, your cargo and your ride. One of those days.