Blue Wizards

Blue Wizards, p.n., Tolkien-ism 1. in the works of J.R.R. Tolkien, the Ithryn Luin, the two of the five Istari (or wizards) who forsook the west of Middle-Earth and wandered into the east (and out of the story). 2. in gamerese, used to refer to mage characters who do nothing in the game, or drop out of the game early. [GJ1]
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Addendum: There were five Istari, or wizards, who were disguised Maiar sent to Endor, or Middle-Earth, to assist the Children of Ilúvatar in their fight against Sauron. The Blue Wizards were named Alatar and Pallando. The other three wizards were, of course, Radagast the Brown, Saruman the White, and Gandalf the Grey. [GJ1]