Crystal beasts deck (YVD)

This is just imo, but I find that Crystal Beast Control/Swarm decks work much better than Crystal Beast decks that base themselves around Rainbow Dragon. So I suggest working more on the swarm and control and take out all the Rainbow Dragons or reduce it to just 1 Rainbow Dragon.

-3 Rainbow Dragon
-1 Cobalt Eagle
-2 Abundance
-1 Rare Value
-1 Ruby Carnbuncle

+1 Gravi Crush Dragon
+1 Magna Slash Dragon
+1 Smashing Ground
+1 Crystal Fracture
+1 Lightning Vortex
+1 Morphing Jar
+1 Dweller in the Depths
+1 Hamon, Lord of Striking Thunder