While writing the above post, I did some quick Google research for the origins of the D&D magic system ... only to discover a surprising quirk of their search engine.
Check out this Google search for "dungeons dragons." Notice anything odd?
... Notice how the context highlighting matches the input phrase dungeons dragons to the page phrase D&D? (Based on my prior search, this is true even for pages on which the words "dungeons" and "dragons" don't appear.)
Maybe I wasn't forward-thinking enough when I created DWIM for the TTU setting. Earth web searches might get there yet, magic or no.