Spellbreaker

"Spellbreaker is an interactive fiction computer game written by Dave Lebling and released by Infocom in 1985, the third and final game in the "Enchanter Trilogy". Like most of Infocom's games, it was released for many of the time's popular computer platforms, such as the Commodore 64, Atari ST and Apple II. It is Infocom's eighteenth game." Source: Wikipedia, "Spellbreaker," available under the CC-BY-SA License.