A range of Pokmon sets are represented here, so there's a lot of Charizard history to admire
If this card is Special Summoned: You can send the top 3 cards of your Deck to the GY, then target 1 Level 4 or lower WATER monster in your GY, except "Deep Sea Minstrel"
Charizard ex is a fairly straightforward deck that accelerates Energy and hits harder based on how many Prize cards the opponent has taken
Overall, he is not as good as Exodia, but it can be said that it is a card that makes it easier to aim for a special victory
You can find some hidden gems this way, and usually for cheap
Other cards you might want to add include Robe of Stars, Meekstone, Retribution of the Meek, Ohran Frostfang, Ikra Shidiqi, the Usurper, Sylvan Caryatid, Utopia Tree, the surprisingly pricey Indomitable Ancients, Heroic Intervention, or Courser of Kruphix.