Keyboard shortcut or other shortcut for CASTing (miracast, screen cast, mirroring)?

I looked around but could not find anyway to assign CAST (as is miracast or screen cast or screen mirroring) to a keyboard shortcut or even create a Shortcut Icon on the desktop.

I think that if that could be done, it might be possible to work solely from the keyboard or with an attached mouse without benefit of a screen/touchscreen.

I don't know if Tasker or Automagic have any way to create such a shortcut method?

Anyone have any ideas?