I decided that for me the Lunar rune feels most like a Form rune, but one that can sometimes be used as an element or condition.
It makes sense if you can combine [Death] and [Lunar] into a kill lunar cultist spell, for instance, in the same way you could do with [death] and [animal] to kill somebody's horse.
Hmm... what a violent example. Should have used mastery or harmony for nicer magic.
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