In my vision work I am indebted to MLK's mastery of vision casting. His 16 minute watershed "I Have a Dream" speech is one the best teaching tools I have used on the elements of vision. In fact we have a cool listening exercise with churches, where we play the speech with a spider diagram in front of them to see how MLK weaves various elements of vision throughout the address. Recently Auxano started developing new resources for Church Unique readers (yet to be released on churchunique.com). The most requested tool is the vision casting "spider diagram."
Download Vision Proper Spider Diagram.