I'm a D&D fan and Magic: The Gathering fan.
I'd heard that Wizards of the Coast says that Magic: The Gathering planes are Dungeons and Dragons planes. I was so excited and full of idea of adventures.
In my research, I didn't see anything about planeswalkers from MTG.
Is there lore and/or written rule(s) supporting MTG planeswalkers? If so, what/where is it?