(high-quality)
THE NOMAD

The anonymous nomad, alwayed on the move with some advice about roads untravelled, lived in Mithicus during the Great Monster Uprising where he taught adventurers a series of specific skills for the following prices (cost reflects the zorkmid inflation of the period):

SKILLCOST(Zm)OFFICAL FROBOZZCO RATING
Mirage 250,000+1 against "Mumbo Jumbo" defense
Dust Devil 360,000+1 when using "Mumbo Jumbo" defense
Sandstorm 480,000+1 when using "Mumbo Jumbo" defense
Whirling Dervish 600,000+1 when using "Mumbo Jumbo" defense
Scarab Shelled 820,000+1 Health Point

SOURCE(S): Legends of Zork