Board Thread:Speculation House/@comment-5047068-20140615190405/@comment-3146930-20140616023828

I've actually talked about this a few other times. Weiss' Glyphs create platforms that operate on simple push/pull physics (think gravity platforms).

Her light-blue Glyphs have the ability to push things away from anything that lands on top of it or anything that hits it. This can be seen when she uses this Glyph as her landing strategy, when Ruby runs up the side of the cliff, and during her fight with the Boarbatusk.

The black Glyph on the other hand seems to work as the opposite, pulling or holding things in place. This can be see when Weiss holds Ruby in place when she is about to launch her at the Nevermore, as well as when she holds herself in place during her fight with the Boarbatusk, before launching herself at it.

However her Glyph does turn red when she is launching Ruby, possibly leading to some effect we are currently unaware of. This could also mean that Weiss has a rainbow of Glyphs with abilities we are not yet aware of.