This item is a Magic the Gathering playmat featuring custom Planeswalkers Key Art by artist Mark Winters, created for the Pro Tour Guilds of Ravnica celebrated in Atlanta in 2018.
The playmat is embroidered, i.e. it has been stitched with thread on the borders to improve durability and to make it even more visually stunning, and wasn't sold outside of the event and is thus very rare.
The playmat size is around 35cm x 60cm.