This card comes with a Certificate of Authenticity from CoolStuffInc,
and was signed by artist Anastasia Ovchinnikova in the presence of a member of the CoolStuffInc staff during a paid signing.
It is therefore guaranteed authentic for the life of the item. Each certificate is hand numbered and pictures of the card are kept on file to verify this card is the one that accompanies the numbered certificate.
You may exert Watchful Naga as it attacks. If you do, draw a card. (An exerted creature won't untap during your next untap step.)