On Weiss Schnee's ability to cast magic circles (Range)

In short sentence, Weiss needed to lure the armor to her magic circle while in Episode 8 she casted white circles for Ruby to run through. What is the mechanics behind those stuff?



Quote 1: “Unlike Ruby and Yang, Weiss is analytical when in battle, waiting for the right moment to strike and retreating when circumstances are not favorable."



So, what caught me off-guard when I watched Episode 8 is that I notice 
Weiss Schnee has the ability to cast “magic circles” at long distance? The magic circles that I’m pertaining to is what helped Ruby Rose to run upward the cliff and finish the Nevermore.

Quoting the transcript, 

“Weiss raises her sword and creates a series of white circles up the wall, which Ruby dashes through by firing the entire way up.”

I believe that Weiss can’t do that. Or she left a link at Ruby’s feet and the color shift has nothing to do with that or the black one maybe.


Reviewing the power of Weiss’ dust from fan’s speculation and confirmed its effect by watching the white trailer and reminiscing Episode 8 scenes:

• Blue - Appears to make a repulsion seal as well as the ability to bind the opponent. 
• Red - Renders Myrtenaster immobile, except by its wielder, enabling it to effortlessly deflect massive blows. In episode 6, this mode also allowed Weiss to manipulate fire. Red runes appeared on the blade when she did this.

So I believe that blue has something to do with gravity, yet if Weiss can cast it anywhere, the she can defeat the Armor in her own trailer easily but:



From what I've observed in the White trailer, Weiss really is analytical in battle [Quote 1]. Upon disarming the Armor of its sword, she casted a magic circle in her place. Then, she waited for the armor to attack her then dodge it – making the Armor fell into her trap / magic circle. She then activated the effect of that magic circle, then boom – she binds the Armor.

So I believe that Weiss can’t cast magic circles far away from her except if she formed links. Maybe she formed links with Ruby.

My speculation also with the binding of the Armor is that, she actually planted some magic circles when she hit the armor.

These are just my speculations though.


References : +RWBY Wikia
Credits goes to RoosterTeeth