Starlight

Starlight is a black-clad mage, found lurking on a small island in the southeastern corner of Buccaneer's Den during the time of Ultima IV.

Description
The dark wizard would claim to be a practitioner of black magic, and a caster of particularly powerful Magic Missile spells. After asking the Stranger if the hero could cast the spell, Starlight suggested that, instead of the formula given in  Book of Mystic Wisdom, the Stranger try using the wizard's own mix of reagents: a single black pearl and a single part of sulfurous ash.

Trivia

 * In the Nintendo port of Ultima IV, an unnamed mage appears in Stralight's stead, who will reveal that by using the password "SELECT" one may purchase  Manroot at apothecaries.