It has a very fast, very narrow gameplan: if you can get your Charizard ex in play, you will have the energy to attack with it, and it will hit like a truck, so you best make that happen as fast as you can
Rare Value Type Spell Card Archetype Crystal Beast TCG Date 2007-05-16 OCG Date 2007-02-15 Card Text If you control 2 or more "Crystal Beast" cards in your Spell & Trap Zone: Your opponent chooses 1 "Crystal Beast" card in your Spell & Trap Zone, you send it to the GY, and if you do, you draw 2 cards
An oddly good comparison is Grim Lavamancer, not for their role or effect but because they are both super powerful cards that work really well with many aspects of the deck
Cards to consider removing (5): Champion of Dusk, Cloudshredder Sliver, Lovisa Coldeyes, Thundercloud Shaman, Merrow Commerce, Cards to consider (14): Kindred Dominance, Heirloom Blade, Omnath, Locus of Rage, Blood Tribute, Forerunner of the Legion, Metallic Mimic, Dregscape Sliver, Harmonic Sliver, Necrotic Sliver, and Kindred Discovery
It could create a backbreaking combo which won the game within two to three turns