NPC witches
From Discworld MUD Wiki
All NPC witches can be readily identified by the presence of warts on their face, with the notable exception of Granny Weatherwax.
NPC witches have varying ability with witch spells, and have been known to cast:
They also sometimes use the following witch commands:
Lastly, NPC witches with a broomstick may simply fly away if they encounter trouble.
See the list of NPC witches.