Rainbow Overdragon OTK: deck recipe

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This deck centers around Rainbow Dragon and Rainbow Overdragon, two of the three “Ultimate Crystal” monsters. Despite the fact that we are still lacking a pretty important card (Ultimate Crystal Magic), thanks to the Skill Transcendent Crystals and cards like Crystal Bond, Rare Value and The Melody of Awakening Dragon, Summoning these two monsters is surprisingly not that difficult. This deck is not intended for competitive purposes, but a lot of decks will have trouble dealing with monsters with such high ATK.

Example Deck

Rainbow DragonRainbow DragonRainbow DragonCrystal Beast Sapphire PegasusCrystal Beast Sapphire PegasusCrystal Beast Sapphire Pegasus
Crystal Beast Amber MammothCrystal Beast Topaz TigerCrystal Beast Emerald TortoiseCrystal Beast Cobalt EagleCrystal Beast Amethyst CatCrystal Beast Ruby Carbuncle
Crystal BondRare ValueRare ValueRare ValueThe Melody of Awakening DragonCrystal Raigeki
Crystal RaigekiCrystal Raigeki-Rainbow OverdragonRainbow OverdragonRainbow Overdragon

Set Skill

[Skill] descriptionUser
Transcendent Crystals
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. This Skill can only be used once per turn, and twice per Duel.
Jesse Anderson
Jesse Anderson

How to Use

Rainbow Dragon

You can Special Summon Rainbow Dragon from your hand by having 7 "Crystal Beast" cards with different names on your field or in your Graveyard. Thanks to the Skill Transcendent Crystals, you can send up to three cards from your hand to the Graveyard and then place the same number of “Crystal Beast” monsters from your Deck to your Spell/Trap Zone, which means you can get up to 6 of the 7 cards required to Summon this monster on your field or in your Graveyard all at once, but, after filling completely your Spell/Trap Zone, you wouldn’t be able to activate Rare Value or Set Crystal Raigeki anymore, so most of the times you will send just two cards from your Deck to your hand via your Skill.

You can use Melody of Awakening Dragon to add Rainbow Dragon from your Deck to your hand since it does have more than 3000 ATK and less than 2500 DEF. Ideally, you want to discard one of the “Crystal Beast” monsters you need to Summon Rainbow Dragon to activate this card.

When Rainbow Dragon is Summoned, the “Crystal Beast” monsters in your Graveyard and/or Spell/Trap Zone are not banished or shuffled back into your Deck, so you can Summon another one right away. You can send the “Crystal Beast” monsters in your Spell/Trap Zone or Monster Zone to the Graveyard to increase Rainbow Dragon’s ATK by 1000 for each card sent and you can do this during either player’s turn since it’s a Quick Effect.

Rainbow Dragon also has another effect that allows you to shuffle all cards on the field back into the Deck by banishing all “Crystal Beast” monsters from your Graveyard, but, since this is an Ignition Effect, meaning you can only activate it during your Main Phase, you are not going to activate it that often. The ATK gained by the first effect is permanent as long as Rainbow Dragon is face-up on the field, but unfortunately, you can’t activate any of its effects the turn its Summoned, so you will have to wait for your next turn for that unless your opponent decides to attack into a 4000 ATK monster.

Rainbow Overdragon

The latest addition to the rather small “Ultimate Crystal” archetype is Rainbow Overdragon, a Level 12 Fusion Monster that, just like Rainbow Dragon has 4000 ATK and 0 DEF. There are two ways to Summon this monster, but in this deck, we are just going to focus on the most viable one.

You can Special Summon Rainbow Overdragon directly from your Extra Deck by Tributing a Level 10 “Ultimate Crystal” monster. The only available card that meets these requirements is Rainbow Dragon and, even if the entire archetype was in the game, we would only have another candidate.

Once per turn, you can banish 1 "Crystal Beast" monster from your GY to make this card gain ATK equal to the banished monster until the end of this turn. This is not a Quick Effect, but, unlike Rainbow Dragon, Rainbow Overdragon can activate its effect the turn it’s Summoned. Most of the times you will banish Crystal Beast Sapphire Pegasus from your Graveyard, which means that this monster will be able to reach 5800 ATK. The other effect can only be activated if Rainbow Overdragon was Fusion Summoned, so you can pretty much ignore it.

Crystal Bond & Rare Value

Use Crystal Bond to add Crystal Beast Sapphire Pegasus to your hand and place any other “Crystal Beast” monster in your Spell/Trap Zone from your Deck. Normal Summon Pegasus, place another “Crystal Beast” monster in your Spell/Trap Zone from your Deck and then activate Rare Value to start drawing cards.

Rare Value has great synergy with your Skill: it allows you to draw two cards by making your opponent send one of two “Crystal Beast” monsters in your Spell/Trap Zone to the Graveyard, meaning you will still have at least one for Crystal Raigeki.

Additional Notes


[Skill] descriptionUser
Transcendent Crystals
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. This Skill can only be used once per turn, and twice per Duel.
Jesse Anderson
Jesse Anderson

It would honestly be just painful to run this deck without this Skill. Transcendent Crystals allows you to set up for Rainbow Dragon, Rainbow Overdragon, Rare Value or even Crystal Beacon.


  • Rainbow Dragon and Rainbow Overdragon only have their high ATK going for them: they have no protection from targeting or card effects, so getting rid of them is really not that hard. On the bright side, Koa'ki Meiru, Vampire and Blue-Eyes hardly run any back row and cards like Wall of Disruption will usually not be enough to stop these huge monsters.
  • Going first is generally terrible for this deck: Crystal Raigeki does provide removal without setting you back since the “Crystal Beast” monsters sent to the Graveyard will still count when Summoning Rainbow Dragon, but Diamond Core of Koa'ki Meiru is all Koa'ki Meiru need to essentially nullify it.
  • Rainbow Dragon and Rainbow Overdragon are Dragon-Type monsters, which means that for a Buster Blader Deck they are just Fusion Material. Thankfully Buster Blader is not that popular, but it’s still a thing you should keep in mind.


Just use future fusion. Send 7 crystal beasts with different names to the gy using future fusion, then summon Rainbow Dragon and tribute for Overdragon.
<< Anonymous
Anonymous Reply
It's not just KC Cup ticket, I remember at least one of the tickets during 2nd Anniversary that just passed, has Emerald Turtle.
<< Anonymous
Anonymous Reply
<< Anonymous
Anonymous Reply
There is no problem if you only have one turtle,because you can use any 7 crystal beast to summon over diagonal
<< Anonymous
Anonymous Reply
<< Anonymous(judai)
johan Reply
<< Anonymous(johan)
Anonymous Reply
That plot is not canon ._.
Your imagination runs wild, that's all ._.
"...Thankfully Buster Blader is not that popular..."
Well I don't think so!
Recently I've seen BB players as much as Koa'ki at Legend Rank
<< Anonymous
Anonymous Reply
until the Ancient Gear nation attacks, now it's just Koaki and AG, since AG will probably obliterate BB thanks to unending nightmare and double cyclone, they will drop in usage a bit which means that Koaki players will have it easier.
<< Anonymous
Anonymous Reply
It WASN't that popular... but for some reason the amount of people who play BB are increasing lol... maybe it's because Silent Magician is losing some popularity. She used to negate the Fusion Sword very badly.
<< Anonymous
Anonymous Reply
Except the fact that Dark Paladin has 3400 atk easily, without DNA Surgery
i think this is Dkayed site coz every he make a deck thats always appear here
<< Anonymous(Kaien)
Anonymous Reply
Building this deck without any help is easy as 🔥.

Commens and feedback


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Then you're either not the op, so answering this was irrevelant, or you are and you just mad...
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