"Rainbow Dragon" Rating Score by シエスタ

Summoning requires 7 types of Crystal Beasts, and he can exist in GY, but there are some less practical ones such as Emerald and Cobalt, so the summoning conditions are troublesome.
With an extreme difference in offense and defense, he has a high RBI of 4000, but has no defensive power and is vulnerable to changing battle positions and reversing offense and defense. However, it is a big advantage that it corresponds to the melody.
It has a high multiplier, permanent enhancement, all deck bounces, and flashy effects, but even though it's difficult to use due to the cost, there are even restrictions that you can't use it during the summon turn.
It has no resistance, cannot be revived, and is difficult to maintain because it takes time to summon.
Is it good to give up on your own effect and connect it to Overdragon?
There are no restrictions on summoning, so if you have more than one card in your hand, you can deploy as many as you want, and as mentioned above, it's easy to arrange them with a melody. It is easy to decide the game at once, but the bottleneck is that the accident rate tends to be high.
If you just want a high RBI, EX monsters and ultimate Crystal Beasts are often enough. Although it has explosive power, it has the impression that it is difficult to handle.
So far, the impression is stronger as a material for Sin and Rainbow Neos than for Crystal Beast.
In the 11th term, the jewel Strak will appear, so I want it to be practical this time.