Originally Posted by Mord

This is Jace. He's stranded on a beach on the plane of Ixalan. Jace is a planeswalker, which means he has a spark within him that allows him to jump from plane to plane at will. Before this scene you're looking at, he was with his fellow planeswalkers on a plane called Amonkhet. There they were trying to save the plane from the machinations of a big bad evil dragon planeswalker called Nicol Bolas. They thought they could take him. They thought they were tough. After all, they'd saved every other plane. They were like the Justic League of the Magic the Gathering universe.

But Nicol Bolas single-handedly bested them all, turning their own powers against them. Jace is a mind mage, so Bolas turned his own mind against him. Jace went mad and in his madness planeswalked blind. He could've gone anywhere. But he went to Ixalan, the one plane where planewalkers cannot jump out of.

So here he is, alone, mad, trapped. This is where the Magic the Gathering meta-story now stands.

By the way, this art, done by Chris Rahn, is an homage to Howard Pyle's piece, "Marooned".