19
2|Taev|Rainbow Dragon
1|Jump|Green Baboon, Defender of the Forest
3|Fotb|Crystal Beast Sapphire Pegasus
3|Fotb|Crystal Beast Amber Mammoth
3|Fotb|Crystal Beast Topaz Tiger
2|Fotb|Crystal Beast Emerald Turtle
2|Fotb|Crystal Beast Ruby Carbuncle
1|Fotb|Crystal Beast Cobalt Eagle
1|Fotb|Crystal Beast Amethyst Cat
1|Db1|Morphing Jar

21
3|Fotb|Ancient City - Rainbow Ruins
3|Fotb|Crystal Beacon
3|Dp07|Gem Release
2|Sdrl|Foolish Burial
2|Fet|Lightning Vortex
2|Fotb|Crystal Blessing
2|Fotb|Rare Value
2|Fotb|Crystal Abundance
1|Dp07|Gem Tree
1|Pgd|Terraforming

I have always felt that rainbow dragon is a bad choice because he offers nothing useful and forces you to water down your deck in order to play him. he is also incredibly easy to take down as he offers no self preservation.

He's a win condition > . >

Last time I checked, win conditions are good to play.

ok then by that logic exodia and final should be in this deck. win conditions are only good to play if they are fairly easy to utilize and they dont weaken the deck to use it. by having to add in lackluster cards to a deck in order to play said win condition you mess with the over all consistency of the deck, especially when the deck starts to try and do several things at the same time. this is basic strategy you fail when you devote time to an idea that doesnt support your main goal.

and if you try and tell me that rainbow dragon has the same goal as the crystal beasts then you really have no grasp on strategy or the crystal beasts.

Rainbow Dragon is another win condition for Crystal Beast. He's a free 4000 beatstick.

Look at any OCG Crystal Beast deck and you will see them packing 2 Rainbow Dragon.

and three copies of summons priest which we dont have. you are putting to much emphasis on japans meta.

Gem Tree and Release of Gem make the deck able to function w/o Summon Priest.

i will agree with release of gem but i dont like gem tree. personally i like gem counter. it sets up crystal abundance

Gem Tree is amazing.

At most it usually will search for 2 Crystal Beasts, making Rainbow Dragon that much easier to get out.