miscast, as it's not used anywhere else the player glows, and the fact that backlight is used on monsters as a substitute for levitation means that monsters glow often enough as a result of miscasts.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8394 c06c8d41-db1a-0410-9941-cceddc491573
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