Undead warrior shimmer like a wave of heat and are equipped with
ghostly blades. As incorporeal beings, they are impervious to all
physical attacks, though their own spiritual weapons are just as deadly
as any solid implement. Aside from magic, the most practical and
adequate method to defeat these blasphemous creatures is to splash it
with holy water. This liquid will burst instantly into flames upon
contact, the purifying fire engulfing its ghostly form, leaving nothing
but a few cinders to scatter in the breeze.