Reweave was created by the Dreamwright Mantic, as part of the Forgers Circle. He was very concerned with rebuilding, and creating things. In particular, he searched for an art that would help strengthen the City walls. His first attempt at this, the art of reweave. Naturally, it is too weak, even at the higher plateaus to affect something as immense as our Walls, but is good for spot repair. Taking this knowledge a bit further, he decided to try reweave on other talismans as well. After experimentation, he found that alts, elements, blades & their silk were all not durable enough to be considered for reweaving, but shields were. As no dreamer has the capability to reweave our walls as of yet, this (reweaving of shields) has become it's primary function.