One of my PCs is playing an Astromancer in our current campaign. I've restricted access to many of the Azure order spells due to his being an apprentice, not having access to proper research and/or his masters teachings and the fact that I generally like to downplay magic in my version of the Old World. In place of this lack of magical resources I've created these cards which represent various astrological phenomena. It works great in creating a mood and my players love'em!
(right click and "view image" for the full size image)
The Imgur album can be found HERE
What do y'all think?