Send 1 to 3 cards from your hand to the Graveyard. Choose the same number of "Crystal beast" monster(s) from your Deck as the number of cards you sent from your hand to Graveyard, and place it/them tin your Spell/Trap Zone as Continuous Spell cards. This Skill can only be used once per turn, and twice per Duel.
This skill makes the deck so much more consistent the deck become so much better and finally can use the actual Rainbow dragon. Tried it in Legend it has some issue with Amazoness since you crystal beast most likely be banished by Onslaught so that is sad and Swords Women counter Rainbow Dragon hard that maybe a bad match up.