Skeletal Horse

The skeletal horse can only be obtained by first brewing up a flesh-eating potion made by the alchemist. Use the potion on a horse and it will begin to rot away the flesh. If you use the potion on any other animal, it will just poison them. There is a very slim chance that the horse will turn into a skeletal horse.

Increasing your chances

Although any horse can be used, if you use a rare steed, you can increase your chances. Semi-rare horses such as the fey steed, snow pony or dwarven steeds (to name a few) will increase your chances by 50% over the base amount. Rare horses such as the draconian steed or the vampire steed will double your chances over the base amount.

If you are a necromancer with 80 skill or higher, your chances are increased a small amount again.