Want to wage war against the Phyrexians? Want to destroy worlds with Ob Nixilis? Want to travel the Multiverse in the Weatherlight?
Magic: The Gathering has a huge mythos to it. Just look at a card and you're likely to see something you could create in Spore. Creatures, people, GA props, adventures, buildings, vehicles, plenty to work with!
Please post here if you want to join the project. There's a sporecast for anything MTG-related you create: http://www.spore.com/sporepedia#qry=ssc-501047030088