Crystal Beast Deck

Overview
Introduced in Yu-Gi-Oh GX by Jesse Anderson, Crystal Beasts have become a semi-popular deck type. On their own, they're capable of producing a powerful OTK. They're also involved in the summoning of Rainbow Dragon.

Every Crystal Beast deck will include some (but not necessarily all) of the following monsters:
 * Crystal Beast Ruby Carbuncle
 * Crystal Beast Amber Mammoth
 * Crystal Beast Topaz Tiger
 * Crystal Beast Emerald Tortoise
 * Crystal Beast Sapphire Pegasus
 * Crystal Beast Cobalt Eagle
 * Crystal Beast Amethyst Cat

Crystal Beasts also have many support cards to go with and aid any strategy the duelist using them may have in mind. They are as follows:
 * Ancient City - Rainbow Ruins
 * Crystal Abundance
 * Crystal Blessing
 * Crystal Beacon
 * Crystal Release
 * Crystal Tree
 * Crystal Promise
 * Rare Value
 * Crystal Raigeki
 * Crystal Pair
 * Crystal Counter
 * Last Resort (Ancient City - Rainbow Ruins support)
 * Rainbow Gravity (Rainbow Dragon and Rainbow Dark Dragon support)
 * Rainbow Path (Rainbow Dragon support)

Please note that Rainbow Dark Dragon is not compatible with the Crystal Beasts. It is not to be added to a Crystal Beast deck.

Because of Crystal Beast's universal effect of transferring to the Spell & Trap Card Zone as Continuous Spell Cards when destroyed, some decks will also use cards that are influenced by Continuous Spells. Magna-Slash Dragon, Gravi-Crush Dragon, Hamon, Lord of Striking Thunder, and Dweller in the Depths are examples of this type of Crystal Beast manipulation. The monster Rescue Cat is also an invaluable tool. With its effect, you can Special Summon Crystal Beast Amethyst Cat from the deck with ease.

Rainbow Dragon
Rainbow Dragon is a powerful asset to a Crystal Beast deck, and if you play your cards right it can be fairly easy to summon. If you decide to focus on Rainbow Dragon, be sure to add cards like Rainbow Gravity, Rainbow Path, Crystal Pair and Crystal Tree. These four are more useful in a Rainbow Dragon deck, so it's not recommended to add them to any other Crystal Beast decks. Have three copies of Crystal Beast Sapphire Pegasus and Crystal Beast Ruby Carbuncle at your disposal, and two copies of the others to maximize the probability of summoning Rainbow Dragon.

Crystal Abundance OTK
The OTK is more competitively friendly. It utilizes Crystal Abundance's effect to work, so a few copies of the card is essential to have in the deck, as well as a way to search it out (Different Dimension Capsule or Gold Sarcophagus work nicely). There must be four Crystal Beasts in the Spell & Trap Zone, plus an open slot to activate Crystal Abundance. Wait until you have five Crystal Beasts on the field or in your graveyard with attacks of 1600 or more to activate the card. Upon activating Crystal Abundance, if your opponent had at least five cards on his/her field, all five of your monsters can be Special Summoned. Crystal Abundance leaves your opponent open to a direct attack.

Monsters

 * Rainbow Dragon
 * Crystal Beast Ruby Carbuncle
 * Crystal Beast Topaz Tiger
 * Crystal Beast Amber Mammoth
 * Crystal Beast Sapphire Pegasus
 * Crystal Beast Amethyst Cat
 * Crystal Beast Emerald Tortoise
 * Crystal Beast Cobalt Eagle
 * Morphing Jar
 * Neo-Spacian Grand Mole (Optional)
 * Kuraz the Light Monarch (Optional)
 * Summon Priest (Optional)
 * Jinzo (Optional)

Spells

 * Ancient City - Rainbow Ruins x3
 * Crystal Abundance x3
 * Crystal Blessing
 * Crystal Beacon x3
 * Crystal Release x3
 * Crystal Tree x3
 * Crystal Promise x3
 * Rare Value x3
 * Lightning Vortex
 * Monster Reborn

Traps

 * Solemn Judgment
 * Crystal Pair
 * Rainbow Gravity
 * Torrential Tribute
 * Mirror Force