Flashfire released in May 2014, with 106 cards and 3 secret cards. This set introduced the secret prints of M Pokemon EX which featured golden text of its attack in the artwork. Both Japanese and International prints featured tha attack text in Japanese however on regular prints in the Japanese set the text is in English.
Cards to look for in Flashfire are M Charizard EX #108, Charizard EX #100 & M Charizard EX #107.