Talk:Excalibur/Umbra/@comment-99.250.2.228-20161230094522/@comment-27322557-20170102044142

Lux means "Light", as mentioned above, although the Primes could be considered the "light" side of Frames.

Although it'd actually be really be really cool, if when Umbra's were released, if instead of it being just that, they released both Umbra and Lux frames, and the difference is your choice of a certain materal when crafting it (or something like that) and Lux would give you moderate bonuses to various stats, while Umbra would either (I can't decide) debuff enemies noticably, or give you certain debuffs, but give more significant bonuses to various stats.