This item is a Magic the Gathering playmat, from the Eternal Weekend Pittsburgh 2017, featuring custom artwork of Black Magic Gaming artwork by Jeff A. Menges.
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 part of a limited edition of only 100 items.
This item is of considerable rarity since it was never sold outside of the event.
The playmat size is around 35cm x 60cm.