Science and TechThe Most Interesting Magic The Gathering Cards Made By Artificial IntelligenceScience and Tech - RSS 2.0
This is an example of the RNN filling in where humans left something out. In the Urza's block there was a cycle of enchantments that turned into creatures, however none of them were red. So the RNN made one!
The RNN created tromple, explained tromple, and is now printing new creatures with tromple. That just goes to show you how powerful an RNN is. A sophisticated enough RNN could create entire expansions with new mechanics.
To see even more examples of A.I. generated Magic cards, head on over to the original thread at MTG Salvation.