Which author took part in editing a later edition of the Dungeons & Dragons Basic Set and also wrote the Dungeons & Dragons Immortals Rules?
Dungeons &amp; Dragons Immortals Rules: Dungeons & Dragons Immortals Rules, written by Frank Mentzer, is a boxed set for the "Dungeons & Dragons" ("D&D") fantasy role-playing game first published by TSR in 1986 as an expansion to the "Basic Set". Dungeons &amp; Dragons Basic Set:  Later editions were edited by Tom Moldvay, Dave Cook, and Frank Mentzer.
Frank Mentzer