I haven't played OSI/EA in years so I maybe incorrect on the naming of this script. Dreadmare - Dread Nightmare -Dread Warhorse.
I did some research on UO Stratics for information on this mount. If I missed something please let me know. I am NOT a scripter by all means. This is really my first one that I have worked on. I took the nightmare.cs and made some adjustments. I feel lucky enough just to figure this much out LOL.
The loot drop on this mare is the same as the nightmare.