Dark Sun - Quick Plot Hooks: Cistern Fiend vs. Dune Trader

A Merchant of House has been contracted to transport a newly spawned Cistern Fiend to a remote location to guard & purify the local water source.  The party is hired on to provide extra protection for the caravan.

a)     The newly-spawned Cistern Fiend is transported in a giant water barrel on a wagon (hard to disguise).  Slaves are brought along to sacrifice (gutted and bled) into the water barrel as necessary to feed the creature.  It grows increasingly hard to protect the cargo as raiding bands seek to take the water in the barrel.

i)      Maybe the caravan's water supply grows dangerously low and the party is paid extra to keep the other guards from stealing water from the barrel.