Remember back in August when Wizards of the Coast released The Art of Magic: The Gathering—Zendikar? Apparently it felt very similar to a D&D campaign setting book. Now, Wizards has released Plane Shift: Zendikar to supplement Art of Magic and allow you to turn everything into a D&D 5th campaign.
The free PDF is 38 pages long, and really gives you everything you need to play. The Art of Magic: The Gathering-Zendikar will help you flesh out the world, but you can also get most of the details you need on MagicTheGathering.com and the Zendikar plane profile.
It seems like it’s been a long time coming. I’m surprised there haven’t been any other official Magic/D&D crossovers until now.