This item is a Magic the Gathering playmat featuring custom art of the Guardian Beast, Kird Ape, Stone-Throwing Devils & Erhnam Djinn artworks by Ken Meyer, Jr. originally featured in Arabian Nights.
This MTG playmat was created for the Old School World Championship that took place in the Winc0n Genova 2022 and it's incredibly rare since it wasn't sold outside of the event.
The playmat size is around 35cm x 60cm.