Mega Charizard Y is the first Mega Evolution of Charizard , introduced in Pokémon X & Y. It Mega Evolves from Charizard through the Charizardite Y Mega Stone, which is exclusive to Pokémon Y. Looking much fiercer in appearance, Mega Charizard Y receives a significant increase in its Special Attack, as well as the coveted Drought ability, creating a perpetual strong sunlight that powers up Fire-type attacks and weakens Water-type attacks. It was revealed internationally on September 4th during the second Pokémon Direct , alongside Mega Venusaur and Mega Blastoise . Then, on October 2nd , it was revealed that this form is actually Mega Charizard Y, in contrast to the revealed Mega Charizard X .