Seanna

Seanna is a slinky mage, found in the woods in the southwestern corner of Buccaneer's Den in Ultima IV.

When inquired about her occupation, Seanna told the Stranger she was a sorceress, and asked if she could help the hero with anything... perhaps magic. Seanna suggested, in her soothing, hypnotic voice, that instead of the formula given for the Sleep spell in The Book of Mystic Wisdom, the hero try using only a single portion of spider's silk. If the Stranger didn't know better, it would seem that the sorceress was trying to lull the hero to sleep!

Trivia

 * Seanna is one of several non-player characters throughout Ultima IV who seem to have been placed solely to tell the player that it is unnecessary to use more than a single portion of any one reagent when preparing a spell; the other such character found in Buccaneer's Den is Starlight.