I'm drawing a number of very similar images using tikz, like this:
Code (and motivation) are given at Making cards for Magic: The Gathering and similar card games.
Compilation is slow. I've timed it, and most of the time is being spent repeatedly drawing the same image, in this case
It seems to me that there should be some way to save this material once it is rendered, to prevent the duplication of work. Is it possible to reuse a part of a tikz image points me in a sensible direction, in that it suggests using a box. My problem is that I have no idea how to get the text to be placed sensibly relative to the material saved in a box... .