Board Thread:Speculation House/@comment-14138255-20141031002615/@comment-9090085-20141115165313

@LiveandSound   No, no, rainbow sword; as in the sheath has a rainbow of colored blades(apparently "rainbow sword" is what Caladbolg is like in the Mabinogion).

Don't take "based off of" too literally in RWBY; Michael 12 was a fairly normal katana that used bullets for explosively fast draws - Wilt is a bright red chokutō, while it's sheath, Blush, is a full-blown rifle. Similarly, Crocea Mors is named after Julius Caesar's sword, but is clearly designed after a medieval sword and shield(The main point of similarity is it becoming embedded in a shield in legends - which is kind of what you see in RWBY).

So if Raven's blade is based off Caladbolg as it appears in the Mabinogion, then it takes the single "rainbow blade" and turns it into a number of interchangeable mono-coloured blades spanning the colours of the rainbow; and stylizes them after katanas.

BenRG wrote: Just because it references the legend doesn't require it must look aesthetically similar.

... Thank you...