The strategy that im using its trying to summon the Rainbow Overdragon (R.O) (always treated as an ultimate crystal) ASAP, ive seen that most decks try to summon him in an slow way or they try to play Conclave control, and thats to slow for me, so what we are gonna do its focusing on the Ultimate Crystal Magic this Trap Card its gonna get us the summon of the "R.O" so easy, we just need that our opponent attack us and destroy us one crystal beast (can be set face down or face up) and thats gonna trigger the effect of send 7 crystal beast with different names from our hand, field or deck to the GY and we can special summon one "Ultimate Crystal" Fussion monster from our extra deck (and it treated as a Fussion Summon; This is important because for the next summon we need to banish from our gy or field one fussion summoned "Ultimate Crystal". So once we summon our R.O we have two choises, keep it on the field protecting us or we can use his quick effect by tributing this fussion summoned card and send all the cards on the field back to the decks, then we can just wait to the opponet to end his turn. Now because we summon in a duel an Ultimate Crystal Monster and because we have 7 crystal beast and the "R.O" in our GY we can special summon our "Ultimate Crystal Rainbow Dragon Overdrive" and he gains 7k attack so he will have 11k, and also he can as quick effect if he hasnt attacked in the turn tribute himself and send all the cards from the field back to the deck and summoning back any number of the banished crystal beast monsters. also between this two summonigs we can summon the "Rainbow Dragon" i recomend to summon him after you use the R.O quick effect, so you will have him and the "Ultimate Crystal Rainbow Overdrive" in the field too. And that's it, this deck have worked very good for me so far, its fun to play and quick but we have to be very careful with not getting any of the single crystal beast killed or banished cuz we need 7 different beast in our hand, deck or field, so be careful with that and use the ones that have extra copies most of the time. Protect your "Ultimate Crystal Magic" at all cost haha because with out that your gonna be playing the slow way, you could still do the main combo but it will take you more time and will be harder. So thats it, have fun playing my deck.
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