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!