Collect all 3 Naruto cards and receive the 4th special card at one of the SHONEN JUMP Tournament locations.

 

You can only get this fourth card by attending a SHONEN JUMP Tournament and bring these 3 promo cards that can be found in:

Promo Card #1: Naruto CCG Series 17 hobby booster boxes

Promo Card #2: Naruto Graphic Novel Vol. 48 in June 2010

Promo Card #3: SHONEN JUMP August Issue in July 2010