https://www.mtgsalvation.com/forums/magic-fundamentals/custo...
I think towards the end of the thread the initiator of the thread and some of the people in the impromptu community that formed around him started discussing how to generate illustrations and even did it to some extent.
I'm not sure it's quite fair, as RoboRosewater is funnier when it's garbled. Some of its cards have been… memorable :)